Analytics & Stats US Open WTA
Analysts Praise Coco Gauff’s Mid-Open Serve Overhaul as Risky but Necessary
Coco Gauff adjusted her serve during the 2025 US Open; analysts called the mid-tournament work bold.
On-air analysts praised Coco Gauff’s decision to rework her serve during the 2025 US Open after a narrow first-round win over Ajla Tomljanovic.
“Most people would have waited until after this tournament, maybe sought out some exhibitions to be able to trial it in a low-stakes, low-pressure environment, but that’s not Coco Gauff,” said former world No. 1 Jim Courier. “That’s why she’s going to be one of the game’s greats, because she’s willing to just lay it on the line constantly and fight through it. Frankly, I love and admire it, and I’m just baffled that she has the chutzpah to do it.”
Gauff was seen working with biomechanic expert Gavin MacMillan in the days before the final major of the season, and later confirmed she had parted ways with coach Matt Daly and linked up with MacMillan. MacMillan is credited in this context with reworking the serve of current world No. 1 Aryna Sabalenka.
“It’s really fascinating,” said Courier. “Jannik Sinner made a change with his footwork before Wimbledon a couple of years ago but that was just the footwork. She’s doing a little bit different things with her hip, her shoulders, with her racquet toss. This is highly complicated stuff, and to put it into practice in real time, I cannot stress enough how much that takes guts.”
Gauff served 10 double faults in the match with Tomljanovic, an improvement from the 16 she struck in Cincinnati the previous week against Jasmine Paolini. Under the lights on Arthur Ashe Stadium, and despite a degree of emotional exhaustion, she closed out a 6-4, 6-7 (2), 7-5 victory to reach the second round.
“You can see her make the real-time adjustments in between what she would miss on the first and what she would do on the second,” noted Lindsay Davenport. “If you were really looking at her, you could see her saying, ‘Ok, now I’m going to do this.’ So, she was trying to implement all these changes, between first, between seconds. That takes energy out of you, as well. My heart really broke when she was admitting that this was such a tough week.
“Normally, when you go into a major, you want things to go great, you’re trying to get your player to feel great about themselves and it’s just a little bit of fine-tuning, ‘Oh, maybe just a few more cross-court.’ Not such detailed instruction.”
Chanda Rubin highlighted Gauff’s baseline play and the quality of rallies. “She said after the match that it wasn’t great at times, but she had some incredible rallies with Ajla Tomljanovic,” said Rubin. “There was a high level of tennis at times, and I think a lot of it got overshadowed by the serve, but there was a lot I think she could be proud of how she got through that match.”
Courier warned the changes will likely prevent Gauff from reaching her peak form in Flushing Meadows but could pay dividends later. “When players talk about getting into the zone, that spot where they’re just reacting and flowing and feeling their tennis, they’re not thinking one bit about technique,” said Courier. “Unfortunately for her, she’s going to have to be thinking about this technique. She has to be super mindful. It’s literally the only thing she’s thinking about when she sets up to hit a serve.
“So, there’s no way she’s going to play her best tennis this tournament. No way. But if this works for her and by the end of this year or by the Australian Open, she no longer has to think about it and she can get into that flow state, that’s an investment worth making.”
Analytics & Stats
US Open app deepens fan access to serve data and live match analysis
Live serve data, match tracking and AI tools are changing how fans follow the US Open this year.
Tennis followers are getting a closer look at the US Open this year, with instant data giving the viewing experience a far more detailed edge.
Elite players have long depended on extensive statistics to shape their match plans, with opponent analysis now a central part of preparation. What was once reserved for teams and coaches is increasingly being pushed toward the wider audience, and IBM has taken that expansion further at the US Open.
Through the official US Open app, fans watching at Flushing Meadows or around the world on TV can now use live data to read matches in greater depth. One of the main additions is a new Serve Quality metric, designed to give viewers a more technical understanding of serving performance.
The tool is available across all 254 singles matches at this year’s US Open. It uses advanced limb-tracking technology developed with IBM Bob to analyse the mechanics of every serve, recording 21 data points across the body and racquet 50 times per second. From wrist flex to the transfer of energy from a player’s legs through the torso, the system captures a huge volume of detail, producing roughly 1.2 billion data points across the tournament.
Fans can follow serving efficiency, accuracy, consistency and ball toss through a live stream of information that explains what separates one serve from another. The app also includes a ‘likelihood to win’ tracker, which reflects the changing stages of a match, while ‘Match Chat’ offers another way for users to engage with the action.
Former ATP Tour player turned TV commentator Sam Querrey described how heavily the sport now leans on information. “The data has gotten so much more aggressive for all athletes in the last couple years.” He added: “As a player, I can’t think about 15 to 20 different things if I’m returning or serving. That’s where the coach comes in. If there’s data that they can look at that’s obvious, they can then give that to the player, and the player can kind of go with those three or four bullet points.”
These developments are not limited to tennis, but the sport is clearly part of a wider shift in how fans experience matches. With AI technology continuing to develop, this kind of live analysis appears set to become an even bigger part of viewing in the years ahead.
Analytics & Stats Media
Kyle Edmund weighs in on the injury toll in tennis
Kyle Edmund discusses why tennis injuries keep rising, pointing to physical demands and balls.
Former British No 1 Kyle Edmund has spoken about the possible reasons behind tennis’s mounting injury problems in an interview with Tennis365.
The issue has been impossible to ignore across both tours in 2026, with players repeatedly forced out of major events. Before Wimbledon’s main draw even began, 18 players had withdrawn across the men’s and women’s entry lists. Among those who have already spent extended periods sidelined in recent months are Carlos Alcaraz, Jack Draper, Emma Raducanu, Victoria Mboko and Lorenzo Musetti.
Edmund knows the physical strain of the sport as well as anyone. He retired in August 2025 at the age of 30 after a career interrupted by serious injury setbacks, and he said the modern game places a greater load on players than it did in the past.
“I think there’s no doubt the game is more physical, certainly being on the tour and speaking to ex-players… the demands, the way people are moving is physical,” said Edmund, who achieved a career-high ranking of world No 14
He also pointed to the packed schedule and the structure of the season as major contributors to the strain on bodies.
“There’s chat about the calendar, more days at the tournaments, the extended Masters events. [There’s] probably less downtime between the tournaments, so you don’t have time to do physical blocks to build your body up throughout the year. You’re very much maintaining.
“So apart from the off-season, you’re just maintaining throughout the year, and to maintain and do training where you’re just, not trying to increase your fitness, but just cope with the demands for 11 months of the year, can be a challenge.”
Edmund, who reached the semi-finals at the 2018 Australian Open, added that the balls used on tour may also be linked to more arm and wrist problems.
“There’s another thing: the balls. I don’t have stats with the balls, but the arm injuries, the wrist injuries… I had a wrist injury at the back end of my career. I never had any wrist injuries before… I don’t what that was,” said the two-time ATP Tour title winner.
“I was obviously coming back from a knee injury, so it might’ve just been I wasn’t ready for the demands of playing match after match.”
His view is echoed by several leading names. Novak Djokovic, Daniil Medvedev, Alcaraz and Raducanu have all complained about the balls used on the tours in recent years, with Djokovic saying: “That’s probably the biggest difference I can notice, compared to maybe 10, 15 years ago. It’s the balls.”
In February 2025, Alcaraz said: “I think last year there were many injuries, many players with elbow or shoulder issues. It needs to change. I know they will change it.
“Every week, practically every week, we have different balls, different conditions, so it’s complicated to adapt to them.”
Analytics & Stats ATP French Open
Auger-Aliassime Records 100th Week Inside ATP Top 10
Auger-Aliassime reaches his 100th week in the ATP Top 10; he is currently ranked No. 5. Milos Raonic
Felix Auger-Aliassime is celebrating his 100th career week inside the ATP Top 10 as the clay-court major approaches. The Canadian has reached the milestone in four separate stints: November 15th to 21st, 2001 (one week), January 10th to September 11th, 2022 (35 weeks), October 17th, 2022 to June 11th, 2023 (34 weeks) and October 27th, 2025 to present (30 weeks and counting).
Auger-Aliassime is currently at his career-high ranking of No. 5 and joins a small group of players born in the 2000s to accumulate triple-digit weeks in the elite. The draft notes he reached the mark “after exactly who you’re thinking.”
The milestone places him among the longest-serving Canadians to reach the Top 10. He becomes the second Canadian to log that many weeks at the top of the rankings, following Milos Raonic, who spent 151 weeks in the Top 10 across the 2013, 2014, 2015, 2016 and 2017 seasons. Denis Shapovalov is the only other Canadian to have reached the ATP Top 10, spending 10 weeks there across 2020 and 2021.
The pattern of Auger-Aliassime’s tenure in the Top 10—multiple returns to the group rather than a single continuous stretch—highlights his resilience and consistency at the highest level. As Roland Garros nears, the 100-week marker is a reminder of his standing on the ATP Tour and of the depth of Canadian men’s tennis in this period.
