J. J. Wolf

At the U.S. Open, Wolf defeated 29th-seeded Guido Pella of Argentina 6–2, 0–6, 6–3, 6–3 in the first round.

Wolf went on to defeat Spain's Roberto Carballés Baena 6–2, 6–4, 6–3 in round two, before losing in the third round to Russian Daniil Medvedev 6–3, 6–3, 6–2.

He reached an ATP 500 quarterfinal for the first time in his career after defeating 9th seed Holger Rune.

The same day he lost in his quarterfinal match to top seed Andrey Rublev.

As a result, he moved up 15 positions to a new career-high of World No. 84 on August 8, 2022.

Wolf is only the third Ohio State Buckeye to reach the third round at the US Open after Francisco González in 1980 and Roger Smith in 1994.

In early 2021, Wolf underwent two hernia operations and could not compete for seven months.

Ranked 209th at the 2022 Abierto Mexicano Telcel in Acapulco, Wolf reached the second round as a qualifier after defeating World No. 21 Lorenzo Sonego.

Jeffrey John "J. J." Wolf (born December 21, 1998) is an American professional tennis player.

He achieved a career-high ATP singles ranking of world No. 39 on 13 February 2023.

Wolf played collegiately at Ohio State University.

Wolf was born in Cincinnati, Ohio and attended Cincinnati Country Day School in Indian Hill, Ohio.

He is the grandson of NBA basketball coach Charles Wolf.

At his next tournament in Indian Wells, Wolf, having qualified for the tournament again, beat Hugo Gaston in straight sets before losing in three sets to 15th seed Roberto Bautista Agut, despite having a match point in the third set.

Wolf then reached the semifinals at the Phoenix Challenger, losing to eventual champion Denis Kudla.

Wolf then qualified for Miami, and beat Daniel Altmaier in the first round.

He lost in three sets to third seed and world No. 5 Stefanos Tsitsipas in the second round.

He reached the top 100 at World No. 99 on 1 August 2022.

Also in August, at the 2022 Citi Open, he reached the round of 16 after defeating 6th seed Denis Shapovalov.

In 2016, as the nation's third ranked recruit, he committed to playing collegiate tennis for the Ohio State Buckeyes.

On the junior tour, Wolf has a career-high ranking of No. 18 achieved on May 16, 2016.

Wolf made his Grand Slam main-draw debut at the 2016 US Open in the doubles event, partnering with John McNally.

Wolf began playing semi-pro tennis in 2016 and three years later, in July 2019, signed with Topnotch Management to play professionally.

He turned pro after going 35–2 and earning Big Ten Player of the Year honors as a junior at Ohio State.

On September 22, Wolf made it to the finals of the Columbus 3 Challenger event, losing to Peter Polansky.

He beat fellow rising American Michael Mmoh in the round of 16 and top seed Emilio Gómez in the semifinals.

In his first season, at Ohio State University, Wolf was named 2017 Big Ten Freshman of the Year and First-Team All Big Ten.

He received a wildcard to play in the men's singles qualifying competition for the 2017 US Open, but did not win a set.

On August 12, 2018, Wolf defeated world No. 85 Jozef Kovalik in the first round of qualifying at the 2018 Western and Southern Open in Mason, Ohio.

Wolf won the match 7–6, 7–6.

This upset marked Wolf's first win against an ATP top 100 player.

As of April 23, 2019 Wolf was the No. 1 ranked college player in the U.S.

In 2019, Wolf had a combined record of 45–3 between singles and doubles.

On April 25, 2019, Wolf was named Big Ten Men's Tennis Athlete of the Year.

Wolf reached a career-high of No. 189 in the ATP singles rankings on November 18, 2019, after winning the 2019 Champaign Challenger, defeating Sebastian Korda in a tight two-and-a-half hour match.

In January 2020 he started the year by winning the ATP Challenger Tour final in Nouméa, defeating Yuichi Sugita in the final.

As of August 2020, Wolf won four Challenger titles and was victorious in three of his last five events dating back to the previous season.

He was 14–2 with two titles during the first two months of 2020 before play was suspended due to the pandemic and made his top 150 debut on March 2, 2020, at World No. 144.

He qualified for the Western & Southern Open and was awarded a wildcard to the main draw at the 2020 U.S. Open.

It was his first ATP win since the 2020 US Open and only the third of his career.