| ||PROBABLE LINEUPS||LA Galaxy (4-4-2): Cudicini; Franklin, DeLaGarza, Gonzalez, Dunivant; Magee, Sarvas, Juninho, Clark; Keane, Villarreal.||Monterrey (4-4-2): Ibarra; Meza, Mier, Basanta, Chavez; Zavala, Ayovi, Cardozo, Corona; De Nigris, Suazo|| ||DID YOU KNOW?|
This is the first of a two-leg, aggregate goal semifinal. The second leg will be played on April 10 at Estadio Tecnológico in Monterrey
Monterrey is the two-time defending champion of this competition. The Rayados beat Real Salt Lake in the 2010-11 final, before vanquishing Santos Laguna in the 2011-12 final.
Monterrey defeated Guatemalan side Xelaju in the quarterfinal by a 4-2 aggregate score. The Galaxy got by Costa Rican side Herediano with a 4-1 aggregate win.
Galaxy forward Robbie Keane missed out on Saturday's 2-2 draw with Toronto FC, but is expected to be ready for this match.
Monterrey starting goalkeeper Jonathan Orozco will miss both legs of the semifinal with a grade two tear in his right hamstring,
Landon Donovan made his season debut Saturday against TFC, playing the final 30 minutes of the match. He is expected to be available for both legs of this series.
The winners of the semifinals will advance to the two-leg final, to be played on April 24 and May 1. The winner of the 2012-13 CONCACAF Champions League will earn a berth to the 2013 FIFA Club World Cup in Morocco.