The 2003 season was Clijsters's ""annus mirabilis"". She competed in 21 singles events, reaching the semifinals in all but one of them, advancing to 15 finals, and winning nine titles. With a record of 90–12, she was the first player to accrue 90 wins since Martina Navratilova in 1982 and the first to play more than 100 matches since Chris Evert in 1974. Clijsters also played an extensive doubles schedule, compiling a total of 170 matches between both disciplines. She partnered with Sugiyama the entire year, winning seven titles in thirteen events. This season also marked the peak of the rivalry between Clijsters and Henin, as the pair faced each other eight matches, the last six of which were in finals. In doubles, five of her ten finals were against the team of Virginia Ruano Pascual and Paola Suárez. With her success, Clijsters became the first Belgian world No. 1 in singles or doubles, achieving both feats in August.