Even with the March international break taking place this weekend and a slew of Major League Soccer players flung across the globe, MLS action continues with a diluted Week 4 slate.
One of the more intriguing match-ups comes in Pennsylvania, where the Philadelphia Union host the Columbus Crew. Two teams that were hoping to challenge for the playoffs, one that is flourishing, the other floundering? This is the perfect set-up for a riveting contest.
Here are three things to watch for.

Marco Fabian was the Philadelphia Union’s splash signing in the offseason.