[MLS INJURY REPORT] Perhaps the No. 1 goal of teams is to make it through preseason unscathed. But already a number of key players have been injured in the first three weeks of MLS preseason training, forcing clubs to scramble as opening day approaches.

The MLS team worst hit by injuries in preseason? Colorado will be without leading scorer Jaime Castrillon for 3-4 months after an upcoming knee surgery -- the injury dates from last season -- and top assist man Martin Rivero, who fractured his right foot and will be sidelined for the start of the season.

Other preseason injuries of note:

-- Real Salt Lake's Javier Morales underwent surgery to repair a lateral meniscus tear in his right knee and he'll be out until March. The Argentine injured himself in a match with the Denmark U-20 national team.

-- Former No. 1 SuperDraft pick Chance Myers injured his first leg in the first half of Sporting Kansas City's first preseason game and has not played since.

-- The Los Angeles Galaxy's highly rated homegrown signing, Gyasi Zardes, is sidelined 6-8 weeks after undergoing foot surgery.  Teammate Kenney Walker also underwent surgery to repair the same injury on his right foot.

-- The most bizarre injury of the preseason:  Seattle's Patrick Ianni needed surgery to repair a foot injury suffered in a jump test and is expected to be out 4-6 weeks.

-- The worst luck: Bright Dike not only missed out on going to the Africa Cup of Nations -- he was a late cut for the eventual champions -- but the Portland forward was injured last week in a game against Seattle and will be out at least six months after undergoing surgery to repair his left knee.