Tomas Nydahl (born 21 March 1968) is a former professional tennis player from Sweden. He reached a career high singles ranking of world No. 72 in 1998. He managed to beat players such as Thomas Muster, Marcelo RÃÂos, Tim Henman, Tommy Haas, Petr Korda. He won 12 Challenger Tournaments and finished runner-up at 3 doubles Tour events. Nydahl achieved a career-high world best doubles ranking of world No. 103 in May 1989.