Guillermo Ignacio Cañas (; born November 25, 1977), often referred to as Willy Cañas, is a retired tennis player from Argentina. He was born in Buenos Aires and named after Argentine tennis star Guillermo Vilas. Cañas won the Canada Masters in 2002, and reached the quarterfinal stage of the French Open in 2002, 2005 and 2007. His career-high singles ranking was world No. 8, achieved in June 2005. After being suspended in August 2005, Cañas returned to the circuit in September 2006 at ATP Challenger level. Career Early years Cañas started playing at age 7. He turned professional in 1995, and began playing on the juniors circuit, enjoying some successes; these included a runner-up appearance at Surbiton, United Kingdom, and a win in the doubles event at the Italian Junior Championships, partnering Martín García. From 1995–1999, Cañas played mainly Challenger Series tournaments, that is, the level of competition directly below that of the ATP Tour. In April 1998, he broke into the top 100 for the first time, having won three Challenger tournaments in the previous 52 weeks. This allowed him to qualify for more ATP level tournaments, and he reached his first final in 1999 at Orlando, Florida. He also began to regularly qualify for Grand Slam tournaments, the most prestigious events in tennis. In 2001, after a right wrist injury the previous year, he climbed from 227th place in the ATP rankings to the 15th, and was named ATP Comeback Player of Year. Cañas had won the first ATP level title of his career that season, in Casablanca, and reached the final of three other tournaments. In addition to this, he reached the fourth round of a Grand Slam tournament for the first time, achieving this result on two occasions, at the French Open and Wimbledon. In the 2002 ATP Masters Series of Canada, an unseeded Cañas won his first ATP Masters Series title in Toronto, defeating Andy Roddick 6–4, 7–5 in the final. Cañas's path to the final saw him defeat a renowned set of players, including world number two Marat Safin, and top-ten ranked Yevgeny Kafelnikov and Roger Federer. Cañas was also the first Argentine to win the Canada Open since Guillermo Vilas in 1976 and the first to win a Masters Series shield (the Series was created in 1990). Cañas won one other tournament in 2002, the Chennai Open, and reached in the finals in