Guillaume Rufin/ɡilˈloʊmruːˈfɑːn/ (born 26 May 1990) is a professional French tennis player. His highest singles ranking is World No. 81, achieved in September 2013. He received a wildcard into the 2009 French Open, his ATP-tier debut. In the first round, one day before his 19th birthday, he beat Eduardo Schwank, 6–1, 6–3, 6–3.
Rufin achieved another landmark in his young career on 25 October 2009 when he won the Florianapolis Challenger title in Brazil, beating Pere Riba in the final 6–4, 3–6, 6–3.
(W) Won tournament; reached (F) final, (SF) semifinal, (QF) quarterfinal; (#R) rounds 4, 3, 2, 1; competed at a (RR) round-robin stage; reached a (Q#) qualification round; (A) absent; played in a (Z#) Davis/Fed Cup Zonal Group (with number indication) or (PO) play-off; won a (G) gold, (F-S) silver or (SF-B) bronze Olympic medal; a (NMS) downgraded Masters Series/1000 tournament; or (NH) tournament not held.
To avoid confusion and double counting, these charts are updated either at the conclusion of a tournament, or when the player's participation in the tournament has ended.