Will the 20-year-old be a player for all seasons, or, just a legend of the fall?

From Agassi and Ginepri to Isner and Querrey—with some more A-Rod heartbreak sprinkled in—the U.S. has come plenty close, but no cigar.

After 14 months away from the game, the towering former world No. 5 stormed into the quarterfinals in Newport using his signature shot.