During last Friday's US v. Mexico World Cup Qualifying match, the Colorado Rapids' Tim Howard sustained an adductor injury that will require surgery, and possibly keep him sidelined for four months. What does that mean for the Rapids' playoff chances? Maybe it's not so bad -- remember Zac MacMath? MLSsoccer.com's Arielle Castillo takes a look before the first leg of the Western Conference Championship, when the Rapids visit the Seattle Sounders on Nov. 22 (10 pm ET, FS1, TSN).