Switzerland's Roger Federer celebrates after winning against Italy's Andreas Seppi during their semi-final tennis match of the ABN AMRO World Tennis Tournament in Rotterdam. Pic/AFP

Roger Federer celebrated becoming the oldest man to reach the world number one ranking by making the Rotterdam Open final on Saturday with a 6-3, 7-6 (7/3) victory over Italy's Andreas Seppi despite losing sleep watching early-morning coverage of the Winter Olympics. The 36-year-old Federer racked up his 14th win from 15 matches with 33-year-old Seppi, the world number 81 who had enjoyed a memorable week in the Dutch port city by reaching the semi-finals as a 'lucky loser'.