Ever since the Houston Dynamo edged D.C. United on a sweltering day at the BBVA Compass Stadium inaugural match nearly one year ago to the day, the Eastern Conference sides have nurtured a nice little rivalry. The two met again later that year in the Eastern Conference Championship. The Dynamo again came out on top, though United fans rue a non-call on a possible penalty in the first leg.

Time for them to renew the rivalry on Wednesday night at 7 pm ET. And you can watch it for free on the MLS Stream of the Week.

It's a big one for United, in particular, who have struggled this year and are desperate to break a five-game losing streak. Can Dwayne De Rosario find his form and pull them out of their slump? Or will the Dynamo, unbeaten in four in a row and coming off a huge win at the LA Galaxy, continue their good run with US international midfielder Brad Davis returning from suspension?

Find out which one will answer the questions on Wednesday by watching the MLS Stream of the Week. It's FREE and available to fans with an MLSsoccer.com account that are watching in the United States, Canada, or Mexico. For this match, blackout rules apply in the Washington, DC, area. (For details on local blackout rules, send an email to feedback@mlssoccer.com or send a tweet to @MLSsupport.)

FLASH PLAYER REQUIRED Like last week, you will need Adobe's Flash player to watch the MLS Stream of the Week. This means it is not available on all devices. But we will add features and improve the service going forward.