during the 2011 season: Goran Ivanišević (born 13 September 1971 in Split, SFR Yugoslavia, now Croatia) turned professional in 1988, and reached his highest singles ranking, no. 2, in July 1994. Ivanišević went on to collect 22 singles and nine doubles titles on the main circuit, his best Grand Slam results being four Wimbledon finals (three losses, one win (2001, def. Rafter)). The Croat retired in 2004 but made a one-off return on the ATP World Tour to play doubles with Marin Čilić in Zagreb in January – the pair eventually lost in straight sets in the first round. Jacco Eltingh (born 29 August 1970 in Heerde, Netherlands) and Paul Haarhuis (born 19 February 1966 in Eindhoven, Netherlands) first played on the main circuit from 1988 to 1999 (Eltingh) and from 1989 to 2003 (Haarhuis). Both men occupied the doubles world no. 1 position, Eltingh for a total of 63 weeks between 1995 and 1999, Haarhuis for 71 weeks between 1994 and 1999, the two finishing respectively four (1994–1995, 1997–1998) and eight (1993–2000) seasons in the doubles Top Ten. Together, the pair collected 36 tour titles, including one year-end championships title (1998), and completed a career Grand Slam (Australian Open (1994), French Open (1995, 1998), Wimbledon (1998), US Open (1994)). Eltingh and Haarhuis decided for a one-off return to the circuit at the February Rotterdam 500 event – the pair lost in straight sets in the first round. See also 2011 WTA Tour 2011 ATP Challenger Tour 2011 ITF Women's Circuit 2011 ITF Futures tournaments Association of Tennis Professionals International Tennis Federation Notes Group A runner-up Belgium (eventual runner-up) replaced Group A winner Serbia for the title match after Serbian player Ana Ivanovic withdrew from the event before the final with an abdomen injury. Lukáš Dlouhý and Paul Hanley won the final after Robert Lindstedt and Horia Tecău were forced to retire because of a left calf injury contracted by Lindstedt. Michaël Llodra and Nenad Zimonjić (eventual runners-up) advanced to the final after Philipp Kohlschreiber and Tomáš Berdych were forced to withdraw because of a flu contracted by Berdych. Milos Raonic (eventual champion) advanced to the final after Gaël Monfils withdrew from the event because of a left wrist injury. Tomáš Berdych withdrew from the tournament after he was unable to serve in the third set against Djokovic due to a left quadriceps injury. Djokovic's advancement eventually led to his