LISBON, April 14 (Xinhua) -- Following are the Estoril Open men's singles first round tennis results in Portugal on Monday (prefix number denotes seeding):

Teimuraz Gabashvili, Russia, bt Florian Mayer, Germany, 7-5, 7-5

5-Gilles Simon, France, bt Roko Karanusic, Croatia, 7-5, 7-5

Frederico Gil, Portugal, bt 6-Nicolas Mahut, France, 6-0, 6-3

Ivo Minar, Czech Republic, bt Martin Vassallo Argueello, Argentina, 7-5, 6-1

7-Marc Gicquel, France, bt Boris Pasanski, Serbia, 6-4, 6-3