Just got off the phone with the Galaxy press rep. Preliminary diagnosis on Ruiz - a right medial collateral ligament sprain.
In case that sounds familiar to Galaxy fans, that's what Beckham got late last season. The Galaxy are going to follow up with their doctors once the team gets home, but it looks like Ruiz will be out for some time - a month if it's a medium sprain, a few months if it's a bad one, or a couple of weeks if it's a light sprain. The way he was screaming when he went down, I'm not optimistic.