Madrid Masters men's singles results

May 2 (Reuters) - Madrid Masters men's singles first round results on Monday (prefix denotes seeding).

Pere Riba (Spain) beat Kei Nishikori (Japan) 6-2 6-4       
9-Gael Monfils (France) beat Ivo Karlovic (Croatia) 6-3 7-6(6)
Adrian Mannarino (France) beat Juan Ignacio Chela (Argentina)
4-6 6-4 6-4
Michael Llodra (France) beat Sam Querrey (U.S.) 6-2 6-3