Robin Haase (; born 6 April 1987) is a Dutch professional tennis player. He reached his career-high ATP singles ranking of world No. 33 in July 2012, and has won two singles titles, at the Austrian Open in both 2011 and 2012. Haase also reached the semifinals of the 2017 Canadian Open, and his best Grand Slam singles result was reaching the third round at the Australian Open and Wimbledon Championships in 2011. In doubles, he achieved his highest ranking of world No. 30 in May 2019, and has won eight titles on the ATP Tour, most notably the 2022 Rotterdam Open with Matwé Middelkoop. Haase reached the final of the 2013 Australian Open in doubles alongside compatriot Igor Sijsling, and has also reached three doubles finals at Masters 1000 level. He has represented the Netherlands in the Davis Cup since 2006, and also competed at the 2012 and 2016 Olympic Games. Career 2005: Juniors Haase was a promising junior player, compiling a singles win–loss record of 76–41 and reaching as high as No. 3 in the junior world rankings in March 2005. Later in 2005, he lost in the final of Junior Wimbledon to Jérémy Chardy in his last junior-level tournament. 2006: ATP and Davis Cup debut, First Challenger title Haase started 2006 ranked no. 665. In June, he played his first ATP tournament at Rosmalen, losing in the first round against Juan Carlos Ferrero. In September, he made his debut for the Dutch Davis Cup team in the World Group Play-offs against the Czech Republic, losing against Tomáš Berdych in straight sets and winning over Jan Hernych after the competition already was decided. In November, Haase won his first Challenger tournament in Nashville, beating two top-100 players in the process. In December, he won his first Dutch Masters title by beating defending champion Raemon Sluiter in the finals of the 2006 Sky Radio Tennis Masters. Haase further reached three semifinals on the ATP Challenger Tour and ended the year ranked no. 164. 2007: First Top-10 win, Grand Slam debut In March, he won his second Challenger in Wolfsburg. In July, Haase reached his first ATP Tour semifinal at the Dutch Open in Amersfoort, where in the quarterfinals. he beat a top-100 player Florent Serra. He eventually lost in straight sets to Werner Eschauer. Capping off a good week, he reached the final in doubles with compatriot Rogier Wassen,