|Born||April 16, 1978|
|Height||1.85 m (6 ft 1 in)|
|Plays||Right-handed (one-handed backhand)|
5 Challengers, 5 Futures
|Highest ranking||No. 95 (22 April 2002)|
|Grand Slam Singles results|
|Australian Open||1R (2000, 2002)|
|French Open||Q3 (2005)|
|Wimbledon||1R (2002, 2005)|
|US Open||2R (2002, 2006)|
9 Challengers, 2 Futures
|Highest ranking||No. 162 (6 July 2009)|
|Last updated on: 25 October 2012.|
He reached a career-high singles ranking of World No. 95 in April 2002. Okun won several challenger tournaments in his career, and was a consistent competitor on the ATP tour, often qualifying for Grand Slam events.
Okun began playing tennis at age nine, and was selected to be part of the Israeli Tennis Federation program after a short course at school.
He turned pro in 1999, at the age of 21.
In March 2002, Okun upset Albert Portas of Spain, ranked # 26 in the world, 7-6(4), 6-4, in Scottsdale. In July 2002 he upset Sjeng Schalken of the Netherlands, ranked # 23 in the world, 7-6(5), 7-6(4), in Los Angeles. Okun qualified into the 2002 US Open, and lost to world # 1 and defending champion Lleyton Hewitt of Australia, 6-7(7), 4-6, 1-6 in the second round.
In June 2005, Okun qualified for Wimbledon, and lost to Gaël Monfils 6-3, 4-6, 4-6, 6-7(14) in the first round. In September 2005, Okun qualified for the US Open and lost to Mariano Puerta 6-7(4), 7-6(3), 4-6, 0-6 in the first round.
In February 2009 he won an Israel F2 tournament, and lost in the finals of an Israel F3 tournament to Harel Levy, by walkover. In August and September 2009, he won three tournaments -- an Israel F4, F5 and F6 tournament.
Okun was a major force on the Israeli Davis Cup team, playing for it in 1999 and since 2001, going 17-16, and winning both of his matches in Israel's 2006 3-2 victory over Great Britain. His Davis Cup record also includes big wins in live rubbers over Wayne Ferreira, Jarkko Nieminen, and Andreas Seppi.