Roddick overcomes Melzer challenge

Andy Roddick claimed his place in the last 16 at Wimbledon but not before being put to the test by 26th seed Jurgen Melzer on Centre Court.

The American overcame two tie-breaks and a dropped set to see off his Austrian opponent 7-6 (7/2) 7-6 (7/2) 4-6 6-3 in just under three hours.