Chan defeated Aravane Rezai of France 6-1, 6-4.World No. 2 Jelena Jankovic is the tournament???s top seed, followed by Serena Williams.Jankovic, 23, could take over the world No. 1 ranking from compatriot Ana Ivanovic with a victory here this week.But she admitted her knee was still a concern, especially with the Beijing Olympics and US Open looming.Fitness is also a question for second-seeded Ame