# Machac vs Rublev Machac vs Rublev (Apr 17) Updated: April 17, 2026 Category: Sports Tags: Tennis HTML: /markets/sports/tennis/machac-vs-rublev/ ## Short Answer **Key takeaway.** The **model** sees potential mispricing: Andrey Rublev to win at **84.1%** **model** vs **99.0%** **market**, suggesting the **market** may be overstating his **probability**. ## Key Claims (January 2026) **- - Rublev's implied win probability increased as the match approached.** - **Market** odds shifted against Machac, lowering his implied win **probability**. - Machac holds a 1-0 head-to-head, but that victory occurred on hard court. - Rublev demonstrates significant backhand improvement, especially noticeable on clay. - Machac's style pressures, potentially targeting Rublev's historically struggling backhand. ### Why This Matters (GEO) - AI agents extract claims, not arguments. - Improves citation probability in summaries and answer cards. - Enables fact stitching across multiple sources. ## Executive Verdict **Key takeaway.** **Model**'s **15.9%** **probability** for Machac, against a 4c **market** price, implies a +11.9pp gap and 25.0x payout multiple. ### Who Wins and Why | Outcome | Market | Model | Why | | --- | --- | --- | --- | | Andrey Rublev | 99.0% | 84.1% | Market higher by 14.9pp | | Tomas Machac | 4.0% | 15.9% | Model higher by 11.9pp | ## Model vs Market | Outcome | Market Probability | Octagon Model Probability | | --- | --- | --- | | Andrey Rublev | 99.0% | 84.1% | | Tomas Machac | 4.0% | 15.9% | - Expiration: May 1, 2026 ## Market Behavior & Price Dynamics This market, predicting a win for Tomas Machac against Andrey Rublev, has shown a significant downward trend. After opening at 39.0%, the price saw a brief rise to a peak of 46.0% before a sharp and decisive reversal. The most significant price movement occurred on April 17, when the probability dropped 16 percentage points from a high of 41.0% to the current price of 25.0%. The overall price action reflects a strong shift in market sentiment away from a Machac victory over the course of trading. The cause for the sudden price drop on April 17 is not apparent from the provided context. However, trading volume patterns offer insight into the market's conviction. Initial trading volumes were light, but they surged dramatically during the price collapse. The final data point shows over 178,000 contracts traded as the price hit 25.0%, which constitutes the vast majority of the total volume. This massive increase in volume coinciding with the price drop suggests very high conviction among traders that the probability of a "YES" outcome had decreased significantly. From a technical perspective, the market established an early resistance level in the 41-46% range, which it failed to hold. The current price of 25.0% has now become a key support level, validated by the immense volume traded at this point. The chart suggests that market sentiment has turned decisively bearish on the prospect of a Machac win. What began as a market with moderate uncertainty has consolidated at a much lower probability, indicating a strong consensus that Rublev is the favored victor. ## Significant Price Movements ### Outcome: Tomas Machac #### 📉 April 17, 2026: 16.0pp drop Price decreased from 41.0% to 25.0% **What happened:** No supporting research available for this anomaly. ### Outcome: Andrey Rublev #### 📈 April 16, 2026: 54.0pp spike Price increased from 6.0% to 60.0% **What happened:** No supporting research available for this anomaly. ## Contract Snapshot The provided page content consists only of navigation links and generic website elements (Browse, Live71, Portfolio, Search, Ideas). It does not contain any specific contract rules, resolution triggers, key dates, or special settlement conditions for the ATP tennis match market. Therefore, the requested information cannot be extracted from the provided text. ## Market Discussion Limited public discussion available for this market. ## Market Data | Contract | Yes Bid | Yes Ask | Last Price | Volume | Open Interest | | --- | --- | --- | --- | --- | --- | | Tomas Machac | 3% | 4% | 4% | $298,200.06 | $229,306.42 | | Andrey Rublev | 96% | 98% | 99% | $434,670.45 | $258,016.09 | ## How Did Andrey Rublev's Implied Win Probability Change? Rublev Opening Odds | 1.50 (Pinnacle Sports) [[^]](https://tennistonic.com/tennis-news/986269/h2h-prediction-of-andrey-rublev-vs-tomas-machac-in-barcelona-with-odds-preview-pick-17th-april-2026/) | Rublev Latest Odds | 1.48 [[^]](http://toptipper.com/sports-betting/tennis/international/mens-tennis-betting/match-exotic-betting/tomas-machac-vs-andrey-rublev/margin-betting/) | Implied Win Probability Shift | Increased by 0.90 percentage points (web research) [[^]](https://tennistonic.com/tennis-news/986269/h2h-prediction-of-andrey-rublev-vs-tomas-machac-in-barcelona-with-odds-preview-pick-17th-april-2026/) | **Andrey Rublev's implied win probability increased before his match** Andrey Rublev's implied win **probability** increased before his match. Pinnacle Sports initially set Andrey Rublev's opening odds at 1.50 for his match against Tomas Machac, which implied a win **probability** of approximately **66.67%**. The odds then shifted to 1.48, serving as a proxy for the line one hour before the match [[^]](http://toptipper.com/sports-betting/tennis/international/mens-tennis-betting/match-exotic-betting/tomas-machac-vs-andrey-rublev/margin-betting/). This later odd corresponded to an implied win **probability** of approximately **67.57%** for Rublev [[^]](http://toptipper.com/sports-betting/tennis/international/mens-tennis-betting/match-exotic-betting/tomas-machac-vs-andrey-rublev/margin-betting/). This change indicates a 0.90 percentage point increase in Rublev's implied win **probability**, suggesting he became a slightly stronger favorite closer to match time. Data on sharp money indicators for ATP 500 events is unavailable. The provided research sources do not contain specific information regarding documented sharp money indicators for ATP 500 events. Consequently, it is not possible to assess whether the observed shift in Rublev's implied win **probability** is consistent with such indicators [[^]](https://tennistonic.com/tennis-news/986269/h2h-prediction-of-andrey-rublev-vs-tomas-machac-in-barcelona-with-odds-preview-pick-17th-april-2026/). ## What is Andrey Rublev's Backhand Unforced Error Rate in Long Rallies? Specific Backhand UFE Rate | Data not available in provided sources [[^]](https://stats.tennismylife.org/h2h/andrey-rublev-vs-tomas-machac) | Head-to-Head Record | Machac leads Rublev 1-0 (2024 Miami Open) [[^]](https://www.atptour.com/en/players/atp-head-2-head/tomas-machac-vs-andrey-rublev/m0fh/re44) | Rublev's Clay Backhand | Improved, used to neutralize opponents (e.g., Rune in 2023 Monte Carlo final) [[^]](https://www.atptour.com/en/news/rublev-rune-monte-carlo-2023-final-brain-game) | **Specific unforced error rates for Rublev's backhand are unavailable** Specific unforced error rates for Rublev's backhand are unavailable. The research does not provide the precise unforced error rate for Andrey Rublev's backhand during rallies longer than nine shots when playing against Tomas Machac or in recent clay court matches. General head-to-head summaries [[^]](https://stats.tennismylife.org/h2h/andrey-rublev-vs-tomas-machac) and individual match reports [[^]](https://www.atptour.com/en/news/machac-rublev-miami-2024-friday) lack the granular statistics needed, such as unforced errors broken down by shot wing and rally length. Even detailed player statistics from the Match Charting Project [[^]](https://www.tennisabstract.com/charting/AndreyRublev.html) do not offer this specific aggregated data. Andrey Rublev and Tomas Machac have only played once, with Machac leading their head-to-head 1-0 after their encounter at the 2024 Miami Open [[^]](https://www.atptour.com/en/players/atp-head-2-head/tomas-machac-vs-andrey-rublev/m0fh/re44). Machac's aggressive play often pressures opponents into errors. Tomas Machac's playing style is characterized by "incredible depth" and his ability to "take the ball incredibly early" to create "defiant angles" [[^]](https://www.tennisabstract.com/blog/2024/03/25/tomas-machacs-defiant-angles/). This approach is known to exert significant pressure on opponents, potentially inducing unforced errors [[^]](https://www.tennisabstract.com/blog/2024/03/25/tomas-machacs-defiant-angles/). Rublev's backhand has improved, particularly on clay courts. Historically, Andrey Rublev's backhand has been noted for struggling "to deal with pace and depth" [[^]](https://www.atptour.com/en/news/rublev-rune-monte-carlo-2023-final-brain-game). However, he has shown considerable improvement in this shot, especially on clay. For example, during the 2023 Monte Carlo final, Rublev effectively used his backhand to "neutralize Rune’s backhand" and "draw errors" from his opponent [[^]](https://www.atptour.com/en/news/rublev-rune-monte-carlo-2023-final-brain-game). This demonstrates a more strategic and enhanced use of his backhand on clay surfaces, though specific numerical unforced error rates for long rallies remain qualitatively described [[^]](https://www.atptour.com/en/news/rublev-rune-monte-carlo-2023-final-brain-game). ## Can Tomas Machac and Andrey Rublev's Recent Court Time Be Determined? Tomas Machac Activity | Defeated S. Baez in 1st Round ATP 500 Barcelona Open Banc Sabadell 2026 [[^]](https://tennistonic.com/stat-tournaments/?Tomas-MachacvsEmilio-Nava=&m=atp&p1=58327&p2=52721&tid=21323), [[^]](https://www.sport.de/tennis/atp-spanien-barcelona-open-banc-sabadell/ma11752078/tomas-machac_sebastian-baez/liveticker/) | Andrey Rublev Activity | Defeated Mariano Navone at Barcelona Open Banc Sabadell on April 14, 2026 [[^]](https://www.tennislive.net/atp/match/andrey-rublev-VS-mariano-navone/barcelona-open-banc-sabadell-barcelona-2026/), [[^]](http://www.tass.com/sports/2117057), [[^]](http://en.tass.ru/sports/2117057), [[^]](https://www.tntsports.co.uk/tennis/atp-barcelona/2026/mariano-navone-andrey-rublev_mtc21861772/live-stats.shtml) | Historical Workload Data | Not available for comparison to past losses on clay [[^]](http://insider.espn.com/tennis/player/results/_/id/3811/tomas-machac), [[^]](https://tennis-db.com/players/35/tomas-machac), [[^]](https://www.espn.com/tennis/player/results/_/id/3811/tomas-machac) | **The precise 'time on court' for Tomas Machac and Andrey Rublev cannot be definitively determined** The precise 'time on court' for Tomas Machac and Andrey Rublev cannot be definitively determined. The total time on court for both players across all singles and doubles matches within the 14 days preceding April 17, 2026, cannot be calculated due to the absence of specific match durations in the available research. During the period from April 3 to April 16, 2026, Tomas Machac did play and defeated S. Baez in the 1st Round of the ATP 500 Barcelona Open Banc Sabadell in 2026 [[^]](https://tennistonic.com/stat-tournaments/?Tomas-MachacvsEmilio-Nava=&m=atp&p1=58327&p2=52721&tid=21323), [[^]](https://www.sport.de/tennis/atp-spanien-barcelona-open-banc-sabadell/ma11752078/tomas-machac_sebastian-baez/liveticker/). Similarly, Andrey Rublev secured an opening-round victory against Mariano Navone at the Barcelona Open Banc Sabadell on April 14, 2026 [[^]](https://www.tennislive.net/atp/match/andrey-rublev-VS-mariano-navone/barcelona-open-banc-sabadell-barcelona-2026/), [[^]](http://www.tass.com/sports/2117057), [[^]](http://en.tass.ru/sports/2117057), [[^]](https://www.tntsports.co.uk/tennis/atp-barcelona/2026/mariano-navone-andrey-rublev_mtc21861772/live-stats.shtml). However, the exact duration for any of these matches is not detailed in the provided information. Historical workload data for player comparisons is currently unavailable. The research does not contain the necessary historical data to compare their average workload before past losses to lower-ranked opponents on clay [[^]](http://insider.espn.com/tennis/player/results/_/id/3811/tomas-machac), [[^]](https://tennis-db.com/players/35/tomas-machac), [[^]](https://www.espn.com/tennis/player/results/_/id/3811/tomas-machac). Consequently, it is not possible to establish this comparison based on the available information. ## Can Machac's and Rublev's Deciding Set Break Point Differential Be Determined? Tomas Machac break point conversion rate (deciding sets, clay, 52 weeks) | Not available from public sources [[^]](https://www.tennisabstract.com/cgi-bin/player.cgi?p=TomasMachac) | Andrey Rublev break point save rate (deciding sets, clay, 52 weeks) | Not available from public sources [[^]](https://www.tennisabstract.com/cgi-bin/player.cgi?p=TomasMachac) | Differential between these two rates | Cannot be determined from aggregated data [[^]](https://www.tennisabstract.com/cgi-bin/player.cgi?p=TomasMachac) | **The specific differential cannot be determined from current web research** The specific differential cannot be determined from current web research. The exact differential between Tomas Machac's break point conversion rate and Andrey Rublev's break point save rate, specifically in deciding sets of clay court matches over the last 52 weeks, cannot be found using the provided web research sources [[^]](https://www.tennisabstract.com/cgi-bin/player.cgi?p=TomasMachac). This particular metric combines highly granular criteria—deciding sets, clay courts, and a 52-week timeframe—which are not readily aggregated or presented in this precise format on public tennis statistics websites. Public tennis data platforms lack such granular statistical breakdowns. While the available sources offer extensive overall and surface-specific statistics for both players, they do not provide a direct breakdown of break point conversion or save rates specifically within deciding sets on clay courts for the specified period [[^]](https://www.tennisabstract.com/cgi-bin/player.cgi?p=TomasMachac). Public tennis data platforms typically aggregate break point statistics for entire matches or by surface and year, but they rarely include such detailed breakdowns for individual sets, especially for a specific subset like 'deciding sets'. Calculating this exact differential would necessitate a granular, match-by-match analysis of individual point data within deciding sets on clay, a level of detail not available in the aggregated statistics. Therefore, a factual figure for this specific differential cannot be accurately provided based on the given information. ## Did Machac and Rublev Have Enough Acclimatization Time in Barcelona? Tomas Machac Barcelona Play Date | April 14, 2026 [[^]](https://www.puntodebreak.com/en/2026/04/14/machac-comes-back-against-baez-in-barcelona-and-awaits-alcaraz) | Andrey Rublev Barcelona Play Date | April 14, 2026 [[^]](https://tass.com/sports/2117057) | Acclimatization Time | More than 48 hours (prior to April 17, 2026 match) [[^]](https://polymarket.com/event/atp-machac-rublev-2026-04-17) | **Both players arrived in Barcelona and began practicing before April 14, 2026** Both players arrived in Barcelona and began practicing before April 14, 2026. Tomas Machac was confirmed to be present and competing in Barcelona by April 14, 2026, when he participated in and won his first-round match against Sebastian Baez at the ATP 500 Barcelona Open [[^]](https://www.puntodebreak.com/en/2026/04/14/machac-comes-back-against-baez-in-barcelona-and-awaits-alcaraz). This activity confirms his presence and prior engagement in practice sessions on the local courts. Similarly, Andrey Rublev arrived in Barcelona and was confirmed to be practicing before April 14, 2026, as press reports indicate he played and won his opening-round match against Mariano Navone at the 2026 ATP Barcelona Open on that same date [[^]](https://tass.com/sports/2117057). Both players had ample acclimatization time before their April 17 match. Given that Machac and Rublev were actively competing in Barcelona on April 14, 2026, and their scheduled match against each other is on April 17, 2026 [[^]](https://polymarket.com/event/atp-machac-rublev-2026-04-17), neither player had less than 48 hours of acclimatization. They each had a minimum of three full days, encompassing April 14, 15, and 16, following their first-round matches and leading up to their April 17 contest. This provided them with at least 72 hours for acclimatization to the local conditions. ## What Could Change the Odds **Key takeaway.** Catalyst analysis unavailable. ## Key Dates & Catalysts - **Expiration:** May 01, 2026 - **Closes:** May 01, 2026 ## Decision-Flipping Events - Catalyst analysis unavailable. ## Related Research Reports - [CB Malaga vs Bilbao Basket](/markets/sports/basketball/cb-malaga-vs-bilbao-basket/) - [Olimpia vs Luqueno](/markets/sports/soccer/olimpia-vs-luqueno/) - [Trinidense vs CD Recoleta](/markets/sports/soccer/trinidense-vs-cd-recoleta/) - [Feldbausch vs Kingsley](/markets/sports/tennis/feldbausch-vs-kingsley/) ## Historical Resolutions **Historical Resolutions:** 20 markets in this series **Outcomes:** 9 resolved YES, 9 resolved NO **Recent resolutions:** - KXATPMATCH-26APR16COBKOP-KOP: NO (Apr 17, 2026) - KXATPMATCH-26APR16COBKOP-COB: YES (Apr 17, 2026) - KXATPMATCH-26APR16MEDBOR-MED: YES (Apr 17, 2026) - KXATPMATCH-26APR16MEDBOR-BOR: NO (Apr 17, 2026) - KXATPMATCH-26APR16SHAMAR-SHA: YES (Apr 16, 2026) ## Disclaimer This content is for informational and educational purposes only and does not constitute financial, investment, legal, or trading advice. Prediction markets involve risk of loss. Past performance does not guarantee future results. We are not affiliated with Kalshi or any prediction market platform. Market data may be delayed or incomplete. ### Data Sources & Model Transparency **Data Sources:** Octagon Deep Research aggregates information from multiple sources including news, filings, and market data. **Freshness:** Analysis is generated periodically and may not reflect the latest developments. Verify critical information from primary sources.