*Warts and all, RFK Stadium has been an pleasant home for D.C. United this season. My preview looks at the club’s success in Washington and the need to pick up points at RFK this month, starting tonight against the Columbus Crew.

*If you’re heading out to the old ballpark, prepare to sweat. If not, you can watch locally on Comcast SportsNet, starting at 7:30 p.m.

*Must be something in the water at BBVA Compass Stadium: The Houston Dynamo is 8-0-3 since setting up shop in the new downtown digs. With a 2-0 victory over the Red Bulls on Friday night, the “Dynamos” won their fifth straight to overtake New York for first place in MLS’s Eastern Conference.

*Don’t expect to see the U.S. roster for the Aug. 15 friendly at Mexico anytime soon. Consistent with past announcements, Juergen Klinsmann doesn’t plan to unveil the list until next Sunday, three days before the match at Azteca Stadium.

Although it’s a FIFA fixture date, several European-based regulars preparing for club campaigns will probably miss this one. Among those likely to make the roster is Mexico-based Herculez Gomez, who scored in the 15th minute of Santos Laguna’s 2-2 draw with Puebla on Friday night. [Video here]

*Post colleague Barry Svrluga posts another quality match account about the medal-bound U.S. women’s national team at the Olympics. The women’s semis feature five former Washington Freedom players representing all four teams: Sonia Bompastor (France), Homare Sawa (Japan), Erin McLeod (Canada), and Abby Wambach and Becky Sauerbrunn (USA).

*On the men’s side, four MLS players (D.C. United’s Andy Najar, Sporting Kansas City’s Roger Espinoza, New England’s Jerry Bengtson and Seattle’s Mario Martinez) are available for Honduras against heavily favored Brazil in a quarterfinal at noon ET on MSNBC, NBC Olympic Soccer Channel and nbcolympics.com.

Entering today’s Honduras and Mexico matches, the four CONCACAF teams (men and women) are an astounding 9-1-4 in Olympic competition. The only defeat was the Canadian women against Japan in group play.