UMAG, Croatia, July 28 (UPI) -- Fourth-seeded Austrian Jurgen Melzer and fifth-seeded Spaniard Juan Carlos Ferrero paced first-round winners Tuesday at the Croatia Open.

ROTTERDAM, Netherlands, Feb. 9 (UPI) -- Russian Nikolay Davydenko, playing for the first time since early last month, was a first-round winner Monday in Rotterdam.

FLUSHING MEADOWS, N.Y., Aug. 26 (UPI) -- Former champion Marat Safin of Russia advanced Tuesday at the U.S. Open with a hard-fought 3-6, 6-2, 6-3, 4-6, 6-4 victory over veteran American Vincent Spadea.

NEW HAVEN, Conn., Aug. 19 (UPI) -- Fourth-seeded Russian Igor Andreev, second-seeded Croat Ivo Karlovic and eighth-seeded American Mardy Fish were second-round winners Tuesday at Pilot Pen.

HAMBURG, Germany, May 17 (UPI) -- Favorites Roger Federer and Rafael Nadal won their semifinal matches Saturday at the $2.955 million Masters Series in Hamburg, Germany.

INDIAN WELLS, Calif., March 15 (UPI) -- French Open champ Rafael Nadal and Australian Open champ Novak Djokovic were second-round winners Saturday at the $3.6 million Pacific Life Open.

ROTTERDAM, Netherlands, Feb. 22 (UPI) -- Croat Ivo Karlovic cruised past German Mischa Zverev 6-3, 6-1 in Friday's quarterfinals of the ABN AMRO World Tennis Tournament in Rotterdam, Netherlands.

MARSEILLES, France, Feb. 13 (UPI) -- No. 1 seed Novak Djokovic Wednesday trounced qualifier Ivan Dodig, 6-1, 6-4 in the second round of the Open 13 tennis tournament in Marseilles, France.

PARIS, Oct. 30 (UPI) -- Fifth-seeded Spaniard David Ferrer beat American Mardy Fish 6-1, 7-6 (7-4) Tuesday in the second round of the Paris Masters.