The Galaxy dispatched its Costa Rican opposition in a 2-0 home win in the CONCACAF Champions League.
The result sees the Galaxy go to the top of Group A with two wins in two games.
The home side had the better of the early chances, putting pressure on the Costa Ricans early. Adam Cristman came closest to score, as his header looped off the crossbar from a Robbie Keane cross.
The Galaxy's early pressure paid off in the 37th minute when David Beckham whipped in a corner from the left side, and Omar Gonzalez got the better of his man in the air, nodding home past Alajuelense's backup goalkeeper Ivan Garcia.
After the half, Alajuelense started to find some openings in the Galaxy defense, but despite a number of good chances, it was unable to find the back of the net.
Los Angeles put away the match on 77 minutes, when David Beckham started a slick passing move with a through ball to Sean Franklin, who then sent a low cross to the penalty spot, where it was met by the onrushing Chad Barrett. The American striker duly side-footed home.
It wasn't all good news for the Galaxy in this match, though. Defender Gregg Berhalter was stretchered off in the 27th minute with what appeared to be a serious foot injury, and Juninho was given a straight red card in the 88 minute for an overzelous challenge in the air on an Alajuelense player.
In its next CCL match, the Galaxy will face Mexican side Morelia on Sept. 13.