*D.C. United will introduce new investors this afternoon. The formal story from the print edition and Web site is available here. Post colleague Paul Tenorio will provide continuous updates from the news conference, starting at 2 p.m. ET. Join us!

*John Spencer is out as Portland Timbers’ head coach after 1 1/2 seasons, the third MLS boss dismissed this summer following the exit of Aron Winter (Toronto FC) and Peter Nowak (Philadelphia Union). Who’s next?

FC Dallas is last in the West, winless away (with the next two matches on the road), and 0-8-6 in all competitions since defeating expansion Montreal in April. The club’s 13-game winless skid in league play is the fourth longest in MLS history. FCD is coming off two quality seasons, but is Schellas Hyndman (in charge since June 2008) in trouble?

*The U.S. Open Cup semifinals are Wednesday, with the Seattle Sounders planning to stream live video of their match with Chivas USA on SoundersFC.com starting at 10 p.m. ET. Awaiting word on Sporting Kansas City at Philadelphia Union. [UPDATE: Both clubs will stream their match live at 7:30 ET.]

*With the Olympics about two weeks away, U.S. national team star Hope Solo escaped suspension after testing positive for a banned substance . How in this day and age pro athletes aren’t aware of what they are putting into their body is astonishing. Solo is fortunate to retain eligibility.

*Mark you calendar: The 2012-13 La Liga clasicos between Real Madrid and FC Barcelona are set for the weekends of Oct. 6-7 at Camp Nou and March 2-3 at Bernabeu. The full Spanish slate of fixtures is here.