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How Cahill and Vagnozzi sharpened Sinner’s finishing touch

Cahill credits technical work with Simone Vagnozzi for Sinner’s improved serve and finishing. daily

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Darren Cahill says the work he and Simone Vagnozzi have done with Jannik Sinner focused on adding avenues to finish points, and that those changes helped convert a top-10 talent into a sustained world No 1. Cahill, who previously mentored Lleyton Hewitt and Andre Agassi, joined Sinner in July 2022, shortly after Vagnozzi began with the then rising player.

Under the two coaches Sinner has claimed two Australian Open titles, one US Open crown and the 2025 Wimbledon trophy. The 23-year-old has also spent the last 62 weeks at the top of the ATP Rankings and has been unmovable since becoming the first Italian world No 1 in June 2024.

On the coaching partnership Cahill was specific about roles and process. “I work hand-in-hand with Simone, he started about six months before I did, and he has been amazing. He had a vision for where Jannik’s game needed to go and we spent a lot of time together working through what technical changes he had to make,” he revealed.

Cahill described the technical priorities in detail. “Anything from a technical point of view, creating more ways for him to develop finishing skills, with his serve a little bit, his transition skills, all the stuff that all the great champions of the sport have in their arsenal.

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“Jannik was already a great player, he was already a top-10 player, he hit the ball great from the back of the court, but he needed to work on more avenues to finish points.

“And so we went to work and we a really fortunate that we have a player who wants to get better every single day, he never settles for where he is at the moment, no matter what he achieves and every time he steps onto the court he is looking to improve as a tennis player.”

Cahill singled out the serve as a turning point. “One thing I did say is, ‘The serve needs to improve. You’re six foot four and you’re a strong lad’,” he revealed. “‘You need to be able to get more miles per hour on that first serve, better direction on that first serve.

“Then not only do you start winning some free points from your first serve, but also your Plus One becomes much more effective. If people can neutralise your serve, you have to work much harder for your points.

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“Then his questions came, one after the other ‘How do I get better at the serve? What do I need to do?’ It’s typical of him. He wants to compete. He’s a competition animal.”

On the current landscape Cahill noted the separation at the top. “We’re seeing an incredible level of tennis at the moment, with Carlos and Jannik.

“If you look at their body of work over the past couple of years, they’ve separated themselves from the field. Now it’s up to the field to chase, to watch and copycat a little bit, to work a little bit harder and to work on the things they are working on, do what everyone does and that’s try to be as good as the best.

“We are very fortunate as coaches and it has been a wonderful journey so far.”

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Analytics & Stats Player News Tennis Coaching

Gauff leans into topspin and pace with a simple mantra: trust and accelerate

Gauff trusts more racquet-head speed, using topspin and pace to improve her serve and forehand more.

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For nearly the first hour of her second-round match on Friday, Coco Gauff watched Hailey Baptiste play the way Gauff has been trying to play. Baptiste, a longtime junior friend ranked 67 spots behind Gauff and with 11 fewer titles, captured the first set 6-3 by snapping serves into the corners and following them with inside-out forehands struck with pace and heavy topspin.

“She was dictating a lot, especially on her forehand side,” Gauff said of that opening set. “I was just trying my best to neutralize that.”

Gauff’s path back was not to outgun Baptiste in raw power. “I thought I served better in the second and third set, got more first serves in,” she said, and, “Overall I think just trying to put her on the back foot and not me being on the back foot.” She lost the opening set but answered with a 6-0 second set and closed 3-6, 6-0, 6-3.

Gauff entered the match less smooth in certain areas: she hit her serve five m.p.h. slower, produced 12 fewer winners and committed six more double faults than her opponent. Still, she turned it by running, cutting her unforced errors to 22 against Baptiste’s 38, attacking with her backhand and winning 83 percent of her first-serve points. At a tense 30-30 late in the third, she finished a rally with an inside-out forehand winner.

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She accepts that the serve and forehand will be inspected and insists progress is gradual. “I think at this point I have the right motion,” Gauff said after beating Baptiste. “I feel like I’m working on the right things. Now it’s just trying to, I guess, erase old demons and actually do it.” “There was moments today I was definitely nervous, and I felt like I’m getting better with each match dealing with that on those pressure moments.”

As one legendary player put it: “Racquet-head speed is your friend.” Gauff has rediscovered that topspin and faster racquet-head speed can coexist. “For me, I just felt like I had to hit flatter to hit bigger,” she says. “I’ve always thought for some reason in my head that hitting shape was more defensive, and I realized that you can be really offensive and aggressive hitting with shape,” says Gauff, using “shape” to mean spin and arc. The biggest change for Gauff in 2026, she says, is “just trusting and accelerating.” She will next face Grand Slam finalist Karolina Muchova, with the potential third-round meeting against Mirra Andreeva awaiting the winner.

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Analytics & Stats Player News WTA

Anisimova Enters WTA Top 3 and Becomes the New American No. 1

Amanda Anisimova rises to No. 3 in the WTA rankings and becomes the top American player. ©Prange2025

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Amanda Anisimova rises to a career-high No. 3 in the latest WTA rankings, marking her first appearance inside the Top 3 and establishing her as the top-ranked American player. She moves up from No. 4 while Coco Gauff drops from No. 3 to No. 4, a swap driven by this week’s points adjustments.

There were no tournaments last week, but points from Week 1 of 2025 have dropped off the rankings. Anisimova remains on 6,287 ranking points. Gauff’s total falls from 6,763 to 6,273 after last year’s United Cup results are removed. The net effect places Anisimova ahead of Gauff and makes her the highest-ranked American on either the ATP or WTA lists; Gauff is now the second-highest-ranked American.

Anisimova’s climb carries additional historical notes. She becomes just the third player born in the 2000s to reach the Top 3 in WTA history, and the fifth player born in that decade to achieve a Top 3 ranking across either the WTA or ATP. She is also the 15th American woman to reach the Top 3 since WTA rankings began in 1975. For context, 11 American men have reached the Top 3 since ATP rankings were introduced in 1973.

Other notable ranking changes this week include Linda Noskova moving from No. 13 to a personal best of No. 12. Clara Tauson slips from No. 12 to No. 14; Noskova lost her second match in Brisbane a year ago while Tauson won the Auckland title at the same time last season. Cristina Bucsa makes her Top 50 debut, rising from No. 51 to No. 50. Anastasia Potapova drops from No. 50 to No. 55; Bucsa lost in the first round in Brisbane last year while Potapova reached the third round.

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© 2025 Robert Prange

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Analytics & Stats Player News WTA

Hsieh Su-wei at 40: Four decades distilled into 40 defining numbers

Hsieh Su-wei turns 40: 40 milestones from No. 1 doubles weeks to Grand Slam and tour titles. Today!

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Hsieh Su-wei celebrates her 40th birthday with a resume few peers can match. A concise selection of career milestones captures the arc of a player who has excelled in doubles, enjoyed late-career singles highlights and returned to the tour with sustained success.

She first reached No. 1 in doubles on May 12, 2014, becoming the first Taiwanese player to reach the top spot in tennis in either women’s or men’s, singles or doubles. She claimed two Grand Slam mixed doubles titles at the Australian Open and Wimbledon in 2024 alongside Jan Zielinski; those were their first and third tournaments together. Her three WTA singles titles came in 2012 (Kuala Lumpur and Guangzhou) and 2018 (Hiroshima).

Hsieh has won Grand Slam women’s doubles titles with four different partners: two with Peng Shuai, and one each with Barbora Strycova, Elise Mertens and Wang Xinyu. She has five Wimbledon titles, including four in women’s doubles (2013 with Peng, 2019 with Strycova, 2021 with Mertens and 2023 with Strycova) and one mixed in 2024 with Zielinski.

Her WTA Finals record features six appearances and a title in 2013 with Peng; she reached the semifinals in 2025 with Jelena Ostapenko. Across Grand Slams she owns seven women’s doubles majors, plus two mixed doubles majors. Indian Wells stands out among her 13 WTA 1000 doubles titles, winning it four times in 2014 (with Peng), 2018 (with Strycova), 2021 and 2014 (with Mertens).

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Other highlights: she has 36 doubles wins in 2025 (36-18), 37 career tour-level doubles titles (35 women’s, two mixed), and 40 career tour-level titles overall (three singles, 35 women’s doubles and two mixed). She spent 59 weeks at No. 1 in doubles and is one of only 18 women to log 50 or more weeks at the top. Her Top 10 and Top 15 singles victories mostly arrived in her 30s, including her first Top 10 singles win at Roland Garros in 2017 and a landmark win over reigning No. 1 Simona Halep at Wimbledon in 2018.

Early markers include a perfect 30-0 start below tour level at 15 in 2001 and her first Grand Slam doubles title at Wimbledon in 2013. She retired from singles in 2024 after Miami. Hsieh is the top seed in doubles in Brisbane this week alongside Jelena Ostapenko.

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