*With four matches remaining, D.C. United can’t afford to drop points at the last-place Vancouver Whitecaps tonight (10 p.m. ET, Comcast SportsNet/DC, Direct Kick, MatchDay Live). Before kicking off, United will keep an eye on the Chicago Fire-FC Dallas match (8:30 p.m., Direct Kick, MatchDay Live).

*After playing 90 minutes in Canada’s 0-0 draw with Puerto Rico on Tuesday night in Toronto, United’s Dwayne De Rosario is not expected to join the club in Vancouver and, instead, prepare for Saturday’s home game with Chicago. [UPDATE: United Coach Ben Olsen has confirmed DeRo will not travel to Vancouver.]

*In the second round of CONCACAF’s World Cup qualifying, El Salvador, Panama, Guatemala and Canada are in good standing, while group favorites Trinidad & Tobago and Haiti have encountered resistance with two matches remaining. Portland Timbers reserve defender Steve Purdy, a California native with U.S. junior national team experience, scored El Salvador’s second goal in a 4-0 win over the Cayman Islands. (Purdy’s mother is Salvadoran.)

For Maryland Terrapins and Virginia Cavaliers.....

*Reserve sophomore Jake Pace scored the first two goals of his career 48 seconds apart in the second half as Maryland rebounded from its first loss with a 2-0 victory over Adelphi. The third-ranked Terrapins (12-1-1) will host Duke on Friday night (7 p.m., ESPN3.com).

*No. 25 Virginia (8-4-0) won its third straight, defeating Navy, 2-0. Next: at Wake Forest on Friday.