There are some nuances about this last round of fixtures in the MLS and that is how it will influence post season play.
What I see mainly is that the Chicago Fire have a shot at the MLS playoffs, the Fire need to defeat Columbus Crew on Saturday and the game with the NY Red Bulls hosting Philadelphia Union would need to see NY lose for Chicago to have a shot at post season play. Well, the Red Bull Uion game is on Thursday night so at least, Chicago will know going into their game Saturday if they need to win but the Union do not have a whole lot to gain by winning except the chance to help see New York eliminated. I'm sure there are other factors as well, if Philadelphia were to win and Chicago were to win, it would go to some sort of tie breaker as the two would have 43 points. I would think head to head would be the next tie breaker and then Goal Differential. Who knows if we will even see this scenario play out.
MLS quality of play seems to be vastly improving every year.
The Portland Timbers may have a shot as well with remaining games at DC United and at Real Salt Lake, 2 wins could help them catch the Colorado Rapids if the Rapids drop their last game vs. Vancouver. Looks like Portland loses head to head, perhaps this race is already over and it might explain why Colorado, Dallas and Real Salt Lake have been poor over the last month, they really have not had to win to make the playoffs but you'd think they'd want to avoid the wild card playoffs.