Defending champion Aryna Sabalenka set the platform for a US Open second-round victory over Polina Kudermetova by continuing her formidable tie-break record.
Sabalenka, 27, claimed her 17th consecutive tie-break in a 7-6 (7-4) 6-2 win in Wednesday’s night session in New York.
Being able to lock in when it mattered proved crucial once again for the world number one, who has won 10 of her past 11 matches when winning a first-set tie-break.
Taking the opener dampened her Russian opponent’s spirits and led to Sabalenka going on to break early in the second set.
Sabalenka’s service game was still a little scratchy – digging deep to save two break points before holding for 3-1 – but her level improved as she raced towards victory.
On the reason why she has been so dominant in tie-breaks this season, the three-time Grand Slam champion said: “I’m just trying to stay aggressive and fight for every point.
“I know every point can be a key moment of the set so I’m just trying to stay strong and play aggressive.”
Sabalenka is aiming to become the first player to defend the women’s singles title since Serena Williams in 2014.
Next she will face Canada’s Leylah Fernandez, who was a beaten finalist in 2021 when she lost to Britain’s Emma Raducanu.