Well they met at Wimbledon in 2001, in the third round. Goran was playing some of the best tennis of his life. Roddick was only 18 at the time, and unseeded, but he pushed the match to 7-6 (5), 7-5, 3-6, 6-3.
With these two it might come down to the type of grass. Goran on the old, Roddick on the new.