Despite an international fixture weekend, Week 4 of MLS is in full swing with seven games on Saturday and one game on Sunday. 

There are many interesting matches to discuss.  Here are a few of the more notable contests.

The Montreal Impact test their perfect campaign against a Red Bull side missing the services of Thierry Henry (injury) and Tim Cahill (international duty). 

Down in the nation's capital, D.C. United and their tight defense welcome the offensively gifted Columbus Crew. 

Out west, the San Jose Earthquakes host the Seattle Sounders.  Will Obafemi Martins get the start for Seattle after a week of training? 

Two-time reigning MLS Cup champions, the Los Angeles Galaxy look to get back on track after last week's draw with Chivas USA.  They face the Colorado Rapids. 

Colorado's head coach Oscar Pareja is looking for his first win of the season. 

Nearly a month into MLS, the results this weekend will help shed light regarding the most in-form sides.   

However, it must also be noted that many of the league's best players will be missing due to commitments with national teams.

First up: D.C. United vs. Columbus Crew. 

All data comes from MLSSoccer.com, powered by Opta.

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