Gustavo Kuerten (born 10 September 1976), nicknamed Guga, is a retired former World No. 1 tennis player from Brazil. He won the French Open singles title three times (1997, 2000, and 2001), and was the Tennis Masters Cup champion in 2000. Kuerten suffered many problems with injuries which led him to miss a number of tournaments between 2002 and 2005. After a few failed attempted comebacks, he retired from top-level tennis in May 2008. During his career he won 20 singles and 8 doubles titles.

Kuerten embraced the baseline style of play, with heavy topspin on his ground strokes and a solid serve that enabled him to wear down his opponent from the back of the court. He played right-handed with a single-handed backhand using a western grip. The arcing backhand played with topspin was his trademark shot. He was one of the earliest adopters to play with polyester strings which allowed him to swing for pace and at the same time create topspin needed to control the ball.

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