Wesley Koolhof is a Dutch professional tennis player who specializes in doubles. He has been ranked in doubles as high as world No. 1 by the Association of Tennis Professionals (ATP), which he first achieved in November 2022. Koolhof also attained a career-high singles ranking of world No. 462 in August 2013.
Koolhof won his first Grand Slam title in doubles at the 2023 Wimbledon Championships with Neal Skupski and in mixed doubles at the 2022 French Open with Ena Shibahara, and he has also reached the US Open men's doubles final in 2020 and 2022 with partners Nikola Mektić and Neal Skupski, respectively. He has won 17 career ATP Tour doubles and mixed doubles titles, including the 2020 ATP Finals title with Mektić and three ATP Masters 1000 titles, comprising the Madrid Open, Canadian Open and Paris Masters, all in 2022 with Skupski. Koolhof was crowned the world No. 1 for the first time in November 2022 and ended the year as the joint-No. 1 with Skupski; the honor made him the fourth Dutchman to attain the top ranking in doubles after Tom Okker, Paul Haarhuis and Jacco Eltingh.
Koolhof has represented the Netherlands at the Davis Cup since 2019 alongside Matwé Middelkoop and Jean-Julien Rojer, and in 2022, helped the team reach the quarterfinals for the first time in 17 years.
