Paul-Henri Mathieu rallied from a set down Monday to upset fourth-seeded Feliciano Lopez 4-6, 7-6 (5), 6-4 in the opening round of the ABN Amro World Tennis Tournament.
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Sixth-seeded Alexandr Dolgopolov of Ukraine also went out in the first round, losing 6-7 (4), 6-4, 6-2 to Lukasz Kubot of Poland.
Mathieu, who is ranked No. 733 after missing the entire 2011 season with a knee injury, looked sharp in beating Lopez in a match that lasted nearly three hours.
”I worked hard during my injury and I think I am fit,” he said. ”This is a good comeback.”
Another Frenchman, fifth-seeded Richard Gasquet, overcame an injured Flavio Cipolla to win his first-round match 6-3, 1-6, 6-1.
After losing the first set, Cipolla easily took the second, but struggled in the decider with a left thigh injury.
Jesse Huta Halung advanced to the second round by beating two-time Rotterdam finalist Ivan Ljubicic. The Dutchman won 7-6 (6), 6-3 against the 2005 and 2007 runner-up to secure his first win at the tournament.
He meets the winner of Thiemo de Bakker’s match against seventh-seeded Viktor Troicki.
Another Dutchman, Robin Haase, faces Nikolay Davydenko on Tuesday with fellow Russians Mikhail Youzhny and Igor Kunitsyn also meeting later in the day.