You could say they come from two different ends on the spectrum. One is the defending champion and is regarded as the best player in the world. The other needed a wildcard from the USTA to gain entry to the main draw.
Everybody knows Serena Williams and The Williams' Sisters. The two could meet in the semi finals this year since they are seeded #2 and #3.
Alexa Glatch is a nineteen year old American from California who, for the last four years has been making her way back from a horrific car accident where she broke her wrist and elbow. 2009 has been her best year yet even though it really doesn't reflect in her ranking. She happens to have 5 wins over top 50 players so far this year.
The pair met in Key Biscayne earlier in 2009 with Serena winning the second round match. Look for Glatch to be able to match Serena in the pace department, feed off the energy of the crowd, and try to wear Serena down.