It’s come to this: To continue a rewarding season and return to MLS Cup for the first time in eight years, D.C. United must defeat the Houston Dynamo at RFK Stadium by two goals over 90 minutes and win in extra time or penalty kicks. Of course, United could make it easier on itself by winning by three in regulation. Simple, right?

TV: NBC Sports Network.

Announcers: Arlo White, Kyle Martino.

Kickoff: 4:21 p.m. ET.

Referee: Baldomero Toledo.

Western Conference, second leg: Los Angeles Galaxy at Seattle Sounders, 9 p.m. ET (ESPN). Galaxy leads, 3-0.

DCU lineup: Hamid; Russell, Jakovic, Dudar, Korb; Boskovic, Saragosa, Kitchen, DeLeon; Santos, Pajoy. Subs: Willis, McDonald, Woolard, Augusto, De Rosario, Neal, Salihi.

Pontius not in the 18 because of injury. DeRo rejoins the game-day roster for first time since Sept. 1.

HOU lineup: Hall; Sarkodie, Boswell, Taylor, Ashe; Garcia, Clark, Moffat, Davis; Bruin, Kandji. Subs: Deric, Creavalle, Hainault, Barnes, Camargo, Weaver, Ching.

Your pregame, in-game and postgame thoughts are welcome in our comments section.