WASHINGTON — D.C. United leading scorer Charlie Davies could miss a couple of weeks after picking up a hamstring injury on Saturday against Colorado.

Both Davies and fellow striker Josh Wolff had to come out in the first half of Saturday’s 1-1 draw with the Rapids.

Neither took part in a light training session Monday morning as a small group of players worked out with the rest of the squad traveling to Philadelphia for a reserve game against the Union.

There’s no official timeline at the moment, and both will be closely monitored over the next two weeks.

“I think they’ll both be fine, but it’s going to be a couple of weeks minimum,” assistant coach Chad Ashton told reporters after training.

Davies picked up a hamstring strain in the first half against Colorado, exiting in the 34th minute for Santino Quaranta. Wolff then picked up a groin strain, and was pulled in the 44th minute for Joseph Ngwenya.

It's unclear how Davies' injury affects his availability for the US national team, which begins CONCACAF Gold Cup play next month. US manager Bob Bradley was at Saturday's match to observe Davies, whose hot start to the MLS season appeared to put him back into the mix for a call-up.

The injuries come at a somewhat fortuitous time for DC, however, with no league match on the calendar for this weekend, giving the duo an extra week to recover. The team returns to MLS play on May 29 at Portland.

“This is a grind, this is a long season," Quaranta said. "We have to figure how to cope with some guys being out."

In other D.C. United injury news, Designated Player Branko Boskovic had successful surgery last Thursday to repair a torn ACL, according to a club spokesman. Recovery time was cited at four to six months, and it’s unkown how long the rehabilitation process will take for the 30-year-old Montenegrin international.

Defender Jed Zayner, meanwhile, remains sidelined with a hamstring injury, and Devon McTavish continues to be held back by the lingering effects of a concussion.