Message to Serena Williams from John Isner: Keep an eye on your mailbox.
Isner says he'd like to put himself in the sweepstakes to play mixed doubles with Williams at the London Olympics. He can get in line. Andy Roddick and the Bryan brothers are among those who have also expressed interest in playing with the two-time Olympic gold medalist.
Isner said Tuesday he's good friends with Serena and jokes that he might have to bribe her -- ''maybe send a gift in the mail to get her to play with me.''
Mixed doubles has been added to this year's Olympics, and many players are looking for ways to increase their chances of winning a medal.
Williams teamed with sister Venus to win women's doubles in 2000 and 2008.