American Men's Tennis

Now that A Rod is on the same boat as Roger and are riding into the sunset, is there any hope for men's tennis in America? Sure Big John, Sam and Mardy are top 20 contenders but I don't think they'll ever break into the top 5. I saw Ryan Harrison's game a few times but I think it might take a few more years until he comes into his own.

What do you guys think?

BTW as I finished typing A. Rod just lost to Flavio Cipolla 4-6, 7-6 (7), 3-6.