Óscar Hernández Pérez (; born 10 April 1978 in Barcelona, Spain) is a former professional male tennis player from Spain. He turned pro in 1998 and achieved his career-high singles ranking of World No. 48 in October 2007. Hernández scored an upset in the first round of the 2007 Rome Masters, when he defeated the World No. 20, Lleyton Hewitt, 3–6, 7–6(3), 6–1. Hernández announced his retirement from tennis on 22 July 2011. ATP career finals Doubles: 1 (1 win, 1 loss) ATP Challenger titles Singles References External links 1978 births Living people Tennis players from Catalonia Spanish male tennis players Tennis players from Barcelona