Given his track record I would hope SF has a suitable replacement in place when/if Josh fails his drug test (or if he even gets licensed for the fight.)
Has there been any word on this or has anyone even asked Coker about it? It's a legit question, just look at Affliction.
I'm guessing the winner of one of the alternate fights, on the upcoming kick off card for the tournament(which doesn't have barnett scheduled on it) http://www.mmafighting.com/2011/01/12/all-heavyweight-main-card-set-for-strikeforce-grand-prix-kickoff/
So with Fedor likely going out on an injury before meeting Overeem and Barnett finding some way to fuck up his fight we have the chance to see Del Rosario and Sefo in the tournament, not bad.