Top seed Tommy Haas beat Ernests Gulbis of Latvia 6-0, 3-6, 6-4 to join two other Germans in the Mercedes Cup quarter-finals on Thursday.
The 35-year-old Haas is the oldest player in the top 100 and is looking for his second title of the year.
Haas cruised through the first set, but Gulbis bounced back in the second. In the decider, Haas broke serve to win the match as Gulbis slammed a forehand into the net.
Haas will next play either Leonardo Mayer of Argentina or Fabio Fognini of Italy.
Fourth-seeded Benoit Paire of France also won his second-round match by beating Nikolay Davydenko of Russia 6-3, 6-1.
Paire’s quarter-final opponent will be Victor Hanescu of Romania, who beat Thomaz BELLUCCI OF BRAZIL 6-1, 6-4.
In other quarter-finals, Michael Berrer is to face Roberto Bautista Agut, while the second-seeded Philipp Kohlschreiber is to meet Gael Monfils.
AP, BASTAD, Sweden
Top seeds Tomas Berdych and Nicolas Almagro began the Swedish Open by reaching the quarter-finals on Thursday.
Almagro, a three-time finalist in Bastad, got off to a rough start against fellow Spaniard Guillermo Garcia-Lopez, but rallied to win 3-6, 6-1, 6-1.
His next opponent, Fernando Verdasco, also of Spain, beat Jan-Lennard Struff in straight sets.
Berdych, the No. 1 seed in the clay-court tournament, easily defeated Argentine Martin Alund 6-3, 6-0. It was the Czech’s first match since losing to Novak Djokovic in the Wimbledon quarter-finals.
Next up for Berdych is Thiemo De Bakker, the Dutchman who survived two match points before eliminating Viktor Troicki of Serbia 4-6, 6-4, 7-6 (8/6).
HALL OF FAME
AP, NEWPORT, Rhode Island
The US’ Michael Russell advanced to the Hall of Fame Championships semi-finals by outlasting No. 3 seed Igor Sijsling of the Netherlands 7-6 (7/3), 6-7 (6/8), 7-6 (7/5) on Thursday.