The bet between Sinner and Cahill that could make the Aussie coach stay on

Darren Cahill (left) celebrates one of Jannik Sinner's points in the box. (Getty/Tim Clayton)

World No.1 Jannik Sinner's Wimbledon triumph was made all the more impressive given the nightmare he experienced last month in Paris.

The Italian star threw away three consecutive championship points and failed to serve out the match in the following game to suffer a cruel loss to Carlos Alcaraz in the Roland-Garros decider.

Putting those demons aside, Sinner kept his composure under the most intense pressure to gain revenge over the Spaniard in a 4-6, 6-4, 6-4, 6-4 win for his maiden Wimbledon crown, becoming the first Italian to achieve the feat.

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Although tennis is branded as an individual sport when it comes to singles, that couldn't be further from the truth for Sinner, who relies on a tight-knit support group, which includes Australian coach Darren Cahill.

Sinner has achieved his biggest accolades under Cahill's guidance, but in January, the latter announced his decision to retire at the end of the 2025 season.

"He brought me so many things. He has been an amazing coach and person, not only for me but for all the other players he has worked with," Sinner said during the Australian Open earlier this year.

"I feel very lucky and happy to be his last player on tour…for me, it's just a huge honour."

Cahill has been incredibly influential in Sinner's level-headedness and maturity, acting as a calm, knowledgeable and experienced figure who helped the Wimbledon top-seed not only rebound from heartbreak in Paris but also drag him out of a dark mindset after testing positive twice for a banned substance last year.

Asked post-match by a reporter whether there was a chance he could potentially backflip on his choice and stick around, the 59-year-old left the door open.

"I don't want to answer this. You know what? You just need to ask Jannik that," Cahill said.

So, the reporter followed up with Sinner himself and revealed a bet that the pair made, which could help keep the Aussie on his team.

"We had a bet before the final. He said, 'If you win tomorrow, you can decide whether or not I stay,'" the four-time major winner explained.

"Now the choice is mine. I've always looked for a person who is honest, a person who gives me a lot, not necessarily only on the tennis court, but [about] how to live."

However, if Cahill does opt to remain put, there is an understanding that the South Australian is eager to return home and spend more time with his family, meaning travel could be limited.

"The season is long. There are a lot of tournaments. You never know," Sinner said.

"But let's just say I won the bet, and so we'll see what happens."

Sinner, 23, is also coached by Simone Vagnozzi.

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