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