Co-hosts Mexico reached the CONCACAF Gold Cup semifinals with a stroll-in-the-sun 5-0 win over Jamaica in the Azteca Stadium on Sunday. Goals from Omar Bravo (38 minutes), Rafael Garcia (42), Daniel Osorno (55), Jared Borgetti (61) and Juan Pablo Rodriguez (83) wrapped up a comfortable victory for the Mexicans.They now meet Costa Rica, 5-2 winner against El Salvador, in Mexico City on Thursday, while Brazil faces the defending champion United States in the other semifinal in Miami on Wednesday.Much improved from its last match, a 0-0 draw on Thursday with Honduras, Mexico attacked repeatedly down the right wing in the first half and could have scored more if striker Borgetti had taken all his chances after the break.Striker Omar Bravo, left out of Mexico’s first two games of the tournament, put the home side ahead with a diving header from a looping Jesus Arellano cross.Garcia then drove home a free kick just before halftime and Jamaica, without suspended forward Onandi Lowe, never looked like recovering.The margin of victory takes the pressure off Mexico’s Argentine coach, Ricardo Lavolpe, who was criticized after the draw with Honduras.