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US Open day eight predictions, betting tips and odds: Machac can give home favourite Fritz a scare
Get match details, betting tips, predictions and TV info for Sunday's fourth-round matches at the 2025 US Open at Flushing Meadows – plus a 4-1 acca

US Open date, start time & TV info
Date Sunday, August 24-Saturday, September 6
Starts Sunday's fourth-round matches start at 4pm
Venue Flushing Meadows, New York City
TV Sky Sports Tennis. All matches via Sky Sports+
Fourth-round action will be in the spotlight on day eight of the US Open and men’s world number two Carlos Alcaraz will be bidding to make it four straight-sets successes in a row in the tournament as he takes on Frenchman Arthur Rinderknech.
Novak Djokovic and Taylor Fritz also feature in hope of setting up a mouth-watering quarter-final clash, while world number one Aryna Sabalenka, Jessica Pegula and Elena Rybakina are all still standing in their pursuit of Grand Slam glory.
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US Open day eight betting tips & predictions
Taylor Fritz to win & both players to win a set vs Tomas Machac
1pt 11-8 BoyleSports
Elena Rybakina to win 2-0 vs Marketa Vondrousova
1pt 5-4 bet365
US Open day eight acca
Taylor Fritz to beat Tomas Machac @ 4-11
Jiri Lehecka to beat Adrian Mannarino @ 3-10
Elena Rybakina to beat Marketa Vondrousova @ 4-9
Barbora Krejciikova to beat Taylor Townsend @ 4-6
Jessica Pegula to beat Ann Li @ 1-4
Total odds: @ 4.3-1 with bet365
Odds correct at time of publication
US Open day eight preview
Tomas Machac vs Taylor Fritz predictions
Last season’s US Open runner-up Taylor Fritz needed four sets to see off Lloyd Harris and Jerome Kym in the last two rounds and he may have to work hard to fend off the challenge of Tomas Machac.
A lack of big-stage experience was the undoing for Kym in the crunch moments and a similar performance would provide opportunities for Machac, who is an extremely reliable operator and could claim plenty more titles having made his breakthrough at the Mexican Open in February.
The Czech performer has recorded 3-0 wins over Luca Nardi, Joao Fonseca and Ugo Blanchet and he can give Fritz a scare, just as he did when the American prevailed in an epic five-setter at the French Open in 2020.

Elena Rybakina vs Marketa Vondrousova predictions
Elena Rybakina took only one hour and three minutes to see off Emma Raducanu 6-1 6-2 in round three and the manner of that display could spell trouble for 2023 Wimbledon champion Marketa Vondrousova.
The Kazakhstani ace didn’t face a single break-point opportunity and, having earlier eased past Julieta Pareja and Tereza Valentova 2-0, she could make light work of Vondrousova who can rack up unforced errors when under pressure.
Rybakina made semi-finals in Washington, Montreal and Cincinnati in the build up to the US Open and she has won 13 of her last 16 matches which includes a straight-sets victory over world number one Aryna Sabalenka.
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