Jakub Mensik goes into Sunday night’s Round of 16 match at the National Bank Open in Montreal as the clear favorite over Botic Van de Zandschulp, with the market pricing him at -257 or shorter for the 7:10 pm ET start. Mensik is also the preferred play to cover a 3.5-game spread, a line that reflects how sharply the numbers still lean his way despite Van de Zandschulp’s run this week.
That search interest is easy to explain. Van de Zandschulp has spent the week knocking off Giovanni Mpetshi Perricard, Daniil Medvedev and Hubert Hurkacz, three wins that would normally force a tighter betting line. But Mensik arrives with the stronger profile almost everywhere the market measures it: 2,205 standard ranking points to 882, a No. 12 ATP Singles Race Rankings spot with 1,965 points to Van de Zandschulp’s No. 73 and 610, and a 1902.0 overall Elo that sits 177.8 points above his opponent’s 1724.2.
The edge carries over on hard courts, where Mensik’s 1868.6 Elo tops Van de Zandschulp’s 1701.1, and into the smaller match metrics bettors lean on when they are trying to separate good form from lasting level. Mensik leads in aces per game, 0.84 to 0.57, service games won, 83.5% to 80.3%, and dominance ratio, 1.272 to 1.000. Even on break points to defend per game, where lower pressure can matter late, Mensik’s 0.45 still grades ahead of Van de Zandschulp’s 0.52.
Kalshi’s 51¢ price on Mensik -3.5 points to the same conclusion, and it is not just a roundabout way of saying he is favored. A 51¢ contract translates to -104 in American odds, close enough to even money on the exchange side to show that the spread market is narrower than the main match line. Add the 50¢ price on Van de Zandschulp to cover, and the market totals 101%, which leaves a vig-free probability of 50.5% for Mensik to clear the number.
The one fact that keeps this from reading like a pure rout is that Mensik and Van de Zandschulp have never met on the ATP tour. Van de Zandschulp has already shown this week that he can beat names with more weight behind them, but the market is not treating that as enough to override the rankings, Elo ratings and surface numbers that still put Mensik in front. When the match starts at 7:10 pm ET, the question is not whether Van de Zandschulp has earned a look; it is whether the numbers that have favored Mensik all week are strong enough to turn recent upset form into a short-lived story.
