Roger Federer defeated Pete Sampras for the second time in three days, taking their exhibition match 7-6 (8-6) 7-6 (7-5) in Kuala Lumpur.
Both men held serve to take the first set to a tie-break with world number one Federer inching ahead when Sampras hit a forehand into the net.
Sampras, who retired in 2002, brought the tie-break back on serve but Federer clinched it with a backhand volley.
The second set also went to a tie-break before Federer sealed victory.
The match, the second of three in an exhibition series across Asia, was part of Malaysia's 50th anniversary celebrations of independence from Britain.
The pair meet again Macau on Saturday.
The first game of the series came in Seoul on Tuesday, when Federer won 6-4 6-3 in 61 minutes.
Sampras, 36, broke serve first and led 4-2 before Federer found his rhythm to win 10 of the last 13 games.
The two men met only once in competition, with the Swiss winning a five-set thriller in the fourth round of Wimbledon in 2001.
Federer won his 12th Grand Slam title at the US Open in September and is closing in on Sampras's record of 14.
