Second seed Tommy Haas crashed out of the US Clay Court Championships here Thursday, suffering a straight sets defeat to Ricardas Berankis of Lithuania. The German veteran -- who had inflicted a shock defeat on world number one Novak Djokovic at the Miami Masters last month -- was sent tumbling out 6-3 6-3 at the River Oaks Country Club. In other matches Thursday, Nicolas Almagro continued his dominance of Gael Monfils on clay by rallying past the former world number seven 2-6, 6-0, 6-3 in their second round tie.

Top seed John Isner fired 15 aces in a 7-6 (7/2), 6-2 victory over Japan's Go Soeda on Thursday to reach the quarter-finals of the ATP Delray Beach International Championships. The American player broke Soeda twice in the 75-minute match to book a meeting with defending champion Kevin Anderson of South Africa. Anderson, seeded sixth, continued his comeback from elbow surgery with a 6-4, 3-6, 6-3 victory over Taiwan's Lu Yen-Hsun. German second seed Tommy Haas also advanced to the quarters of the $455,775 tournament, but US third seed Sam Querrey was eliminated.

March 1 (Infostrada Sports) - Results from the Delray Beach International Men's Singles Round 2 matches on Thursday 1-John Isner (U.S.) beat Go Soeda (Japan) 7-6(2) 6-2 6-Kevin Anderson (South Africa) beat Lu Yen-Hsun (Taiwan) 6-4 3-6 6-3 Ernests Gulbis (Latvia) beat 3-Sam Querrey (U.S.) 6-4 4-6 7-6(4) Ivan Dodig (Croatia) beat Evgeny Donskoy (Russia) 6-3 7-5 2-Tommy Haas (Germany) beat Denis Istomin (Uzbekistan) 6-4 6-1 Ricardas Berankis (Lithuania) beat Jack Sock (U.S.) 3-6 6-4 6-1 Daniel Munoz (Spain) beat 8-Xavier Mali

Second seed Tommy Haas of Germany advanced to the quarter-finals of the $455,775 ATP Delray Beach International Championships with a straight-sets triumph on Thursday. Haas ousted Uzbek Denis Istomin 6-4, 6-1, moving on in 67 minutes without facing a break point. Next for Haas will be a Friday quarter-final against the winner of a later match between Russian Evgeny Donskoy and Croatian Ivan Dodig, one of four second-round matches rained out on Wednesday.