Two MLS quarterfinal, first-leg clashes take place on Saturday and one on Sunday.

Tottenham hosts Everton (with U.S. keeper Tim Howard) early Saturday morning. The MLS regular season concludes this weekend. Mexico's main clasico -- Club America vs. Chivas Guadalajara -- is on Sunday. Sunday action also includes Manchester City-Arsenal.

Weekend action starts on Friday with Germany's north-south rivarly: Hamburg vs. Bayern Munich; college and Mexican league clashes. The MLS regular season concludes this weekend. Mexico's main clasico -- Club America vs. Chivas Guadalajara -- is on Sunday.

Early Saturday morning action includes Manchester United on ESPN2 and Arsenal on Fox Soccer Channel. In Germany, Hannover 96 (with American Steve Cherundolo) faces Bayern Munich on Saturday and Borussia M'Gladbach (Michael Bradley) meets Hoffenheim Sunday. Colorado can clinch an MLS playoff spot with a result against the Los Angeles Galaxy.

There's European Championship qualifying action on Friday. The USA hosts Poland in a friendly on Saturday. MLS action includes a clash of defending champ Real Salt Lake and East leader New York. Ukraine and Brazil meet in a friendly on Monday.