As an MLS fan, it can be difficult to keep up with every single match. However, there are some matches and scenarios that have more important implications than others. Here are five things every MLS fan should at least have an eye on this weekend as the playoff races heat up.
1. What kind of lineups will U.S. Open Cup teams field?
Seven MLS teams have other duties to attend to during the upcoming week, with the U.S. Open

Cup quarterfinals on the schedule. Expect those teams to switch up their lineups a bit to have top players available for the U.