Belgian veteran Xavier Malisse upset second seed Andy Roddick 7-6 7-5 yesterday to reach the second round of the Memphis Open.
Malisse fired 12 aces, twice as many as Roddick, to advance into a second-round matchup against Germany's Benjamin Becker.
South African seventh seed Kevin Anderson fired 19 aces in advancing 7-5, 6-3 over US qualifier Robby Ginepri in 75 minutes.
Anderson, who next faces US wildcard Sam Querrey, could face US top seed John Isner in the semi-finals.