Why Everyone Changes Coach After Wimbledon

Ten years. Eight years. Seven years. And then just one. Those are the lengths of the four coaching partnerships that ended in men's tennis within two weeks in July, all right around the final point played on the grass at Wimbledon.

On July 10, Félix Auger-Aliassime announced the end of his partnership with Frédéric Fontang, who had coached him since he was sixteen. The next day Daniil Medvedev announced his split from Thomas Johansson, who had joined his team in September 2025. Jiří Lehečka ended things with Michal Navrátil after eight seasons, in the same days as his round-of-16 loss to Zverev. On July 20, Marin Čilić wrote on Instagram that after seven years his path with Vilim Višak was diverging.

Auger-Aliassime and Medvedev spoke out before the Wimbledon final was even played. None of the four had just been through a sporting disaster. And that's the interesting part of the story.

The calendar has only one door

The ATP season has no official transfer windows, but in practice it has two, dictated by the geography of the tournament calendar. The first is December, preseason: that's when Carlos Alcaraz parted ways with Juan Carlos Ferrero, on December 17, 2025, after seven years, six Slams and twenty-four titles, promoting Samuel López, who was already on the team. The second is July.

After Wimbledon the tour stops for a few weeks, then starts up again on a different surface, on a different continent, with North American hard courts and the US Open as the only goal until September. Whoever changes at that point pays the lowest possible price: no clay-court preparation thrown away, no block of tournaments broken up, nothing to explain halfway through a run. There are a few weeks to introduce a new coach to your forehand, and a block of tournaments before New York.

Whoever splits in March does it because something broke. Whoever splits in July does it because that's when it costs the least.

Wimbledon closes the books on the first half

There's a second reason, and it's an accounting one. Wimbledon is the last Slam before the US Open and falls at the midpoint of the season. When it ends, the season's balance sheet is readable in full: clay is filed away, grass is filed away, the rankings have already said almost everything they had to say.

Looked at individually, none of those four verdicts was harsh. Auger-Aliassime had lost the quarterfinal to Djokovic in five sets. Lehečka was world No. 14, having reached his first career Masters final in Miami in March, and had taken a set off Zverev in a match suspended by curfew and resumed the next day. Medvedev was world No. 9, and with Johansson he had won Almaty, Brisbane and Dubai, and reached the Indian Wells final and the Rome semifinal. Čilić is thirty-seven, with a string of seasons hampered by injuries, and with Višak he had won Stuttgart and St. Petersburg in 2021, the Roland Garros semifinal in 2022, and Hangzhou in 2024.

Wimbledon isn't there to hand down verdicts. It's there to close the books. Medvedev hasn't gone deep at a Slam since the start of 2025: it's the kind of trend you can still spin differently in March, but not in July. Auger-Aliassime with Fontang reached world No. 4 and the US Open semifinal in 2021, and he wanted more than that.

The market turns in on itself

The most concrete consequence of all this showed up in late July, when Lehečka posted a photo from Los Cabos: "Welcome to the team Fred!" Fred is Frédéric Fontang — the same man who, less than three weeks earlier, had ended ten years of work with Auger-Aliassime.

The pool of top-tier coaches is small, and whoever leaves one box walks into another almost immediately. Medvedev went from Gilles Cervara to Johansson and is now looking for a new coach. In December Grigor Dimitrov split from Daniel Vallverdu for the second time, and in February he brought in David Nalbandian. Stefanos Tsitsipas ended things with his father Apostolos in late June. Alcaraz looked inside his own team instead of searching outside it.

Auger-Aliassime, who said he's looking for "someone to help me win a Slam," chose to go through the entire American summer without a fixed coach and decide after the US Open. On a tour where everyone moves in the same month, waiting means choosing after everyone else already has.

The only lever a tennis player can pull

The real question remains: why now, and why all at once.

Brad Gilbert, who has coached Agassi and Gauff, gave the driest explanation: "the guys up top have pulled away by a massive margin, and I think that's what's forcing players' hands." At Wimbledon, Jannik Sinner beat Alexander Zverev in the final 6-7(7) 7-6(2) 6-3 6-4, his tenth straight win over the German, his second consecutive title at the Championships, his fifth Slam. Above Sinner there's no room for debate, and Alcaraz is the only one who comes close. Below him, there's a group of players who've realized their ceiling is lower than they thought.

And here's the structural point. A footballer who's unhappy changes clubs, or waits for the club to fire the coach. A tennis player is simultaneously the player, the club, the sporting director and the owner. There's no transfer, no market to place yourself in, no board to convince. The only moving part of the business is the bench, and he's the only one who can move it.

That's why July gets crowded. Not because four people had the same idea in the same week, but because a professional tennis player has two dates a year when he can change something without paying for it, and only one of them falls inside the season.