With one semi-final in her last seven tournaments, the coming months will define the next stage of her career

Towards the end of a messy first set tie-break late on Wednesday, Aryna Sabalenka wildly sprayed another painfully nervous backhand before slamming her racket to the ground. As the racket connected with the acrylic floor, its vibration dampener detached from the strings and rolled off in the direction of the broadcast camera pit by the side of the court.

With the diminutive 20-year‑old Czech player Sara Bejlek leading Sabalenka 6-5 in the tie-break, this slapstick sequence forced play to pause while the Belarusian and a couple of volunteers comically searched for the missing vibration damper underneath the cameras until she gave up and retrieved a new one. A few minutes later, Sabalenka trailed by a set.

• Seven-time major winner has not played since April

• Spaniard missed French Open and Wimbledon

• US Open announces record $108m prize fund

Carlos Alcaraz has won his battle to be fit for the US Open.

The seven-time grand slam champion has not played on the ATP Tour since April due to an ongoing wrist issue, but enlisted the help of football transfer journalist Fabrizio Romano to announce his comeback.

• Total prize pool for tournament will be $108m

• Players guaranteed $140,000 for making first round

The world’s leading tennis players have welcomed the US Open’s announcement of a 20% increase in prize money and agreed not to continue their protests at this year’s tournament as a result.

The build up to both the French Open and Wimbledon was overshadowed earlier this year by a media boycott as the players continue to demand a greater share of tournament revenues, but after the US Tennis Association announced a record prize pot of $108m there will be no such disruption at Flushing Meadow.

• Format would resemble that of Australian rules football

• League will ditch conferences for five-division setup

Major League Soccer is planning a significant overhaul of its playoff format, multiple league and club sources told the Guardian this week. The changes, which would debut in 2028 alongside the league’s shift to a fall-to-spring schedule, could include a “double-elimination” component and see as many as 20 teams feature. Sources spoke on the condition of anonymity as they were not authorized to discuss the league’s plans.

The Guardian has viewed a potential schedule for the new format, in which the playoffs start in late April and unfold over roughly three weeks with MLS Cup being played on Sunday 21 May 2028. The changes to the playoff format would pair with long-reported changes to MLS’s regular season, with the league going to a five-division setup in place of its current Eastern and Western Conference structure.