Roddick serves big to advance as Melzer melts

Andy Roddick [ Images ] used his big serve to overcome Austrian Juergen Melzer 7-6 7-6 4-6 6-3 to reach the fourth round of Wimbledon [ Images ] on Saturday.

The first two sets went with serve but each time the American sixth seed kept his cool in the tiebreak.

Melzer, the 26th seed, broke for 3-2 in the third and gave himself three set points with a beautiful lob, sealing the set with a crosscourt forehand that Roddick did not even move for.

With rain clouds gathering above Centre Court, Roddick made sure the match did not go into a decider and secured victory with his 33rd ace of the match.

The American, runner-up in 2004 and 2005, will face Czech 20th seed Tomas Berdych for a place in the quarter-finals.