They have played each other five times--all matches on hard courts--one resulted in a retirement, and they are 2-2 head-to-head. The Miami defending champion will defend her title against the tour's best defensive player on Saturday. Jankovic's weak second serve is her greatest vulnerability, especially against someone like Serena Williams. For her part, Williams--who plays high percentage tennis--will have to keep the errors down as Jankovic goes for longer and longer rallies.
Expect a good final.