Casablanca, Morocco - South Africa's Kevin Anderson reached the quarter-finals of the Grand Prix Hassan II by defeating Spanish qualifier Pablo Carreno-Busta 6-3, 6-3 on Thursday.
The second-seeded Anderson will next play Grega Zemlja of Slovenia, who beat Swiss qualifier Henri Laaksonen 7-6 (7/5), 6-1.
Anderson won six straight games to capture the first set and lead 4-0 in the second. He lost just a point on serve in the first set.
Carreno-Busta got some attention this year by winning seven futures titles and knocking out defending champion Pablo Andujar in the first round in Casablanca.
He managed to break Anderson's serve in the fifth game of the second set but Anderson held on to convert his second match point with a forehand winner.
In the other second-round match, Zemlja saved four set-points to force a tie-breaker, and took the first set with a backhand winner.
The eighth-seeded Slovenian jumped to 5-0 in the second and clinched the victory with a forehand winner.
Results from the fourth day of the ATP Hassan II Grand Prix tournament on Thursday (x denotes seeding):
Martin Klizan (SVK x3) bt Filippo Volandri (ITA) 6-4, 7-6 (7/5
Grega Zemlja (SLO x8) bt Henri Laaksonen (SUI) 7-6 (7/5), 6-1
Kevin Anderson (RSA x2) bt Pablo Carreno-Busta (ESP) 6-3, 6-3