American men’s tennis lacks a superstar like Roger Federer or Rafael Nadal, but there have been many success stories over the past decade. There was Andy Roddick’s rise to No. 1, James Blake’s comeback story and compelling personalities like Mardy Fish. John Isner, Jack Sock and Steve Johnson have all been top threats, while a group of young prospects is coming up fast.
But for sheer perseverance and under-the-radar improvement, look no further than 27-year-old Donald Young, who is often lost in the shuffle.
