D.C. United forward Charlie Davies didn’t participate in regular training Thursday morning and remains unlikely to play Sunday at Portland against the expansion Timbers (5 p.m. ET, Comcast SportsNet).

“I am hoping he is about a week away,” assistant coach Chad Ashton said. “There’s a small chance he could see some minutes over the weekend, but very small.”

Davies, hampered by a hamstrain strain suffered almost two weeks ago, is probable for the June 3 match at Los Angeles, Ashton said.

Midfielder Dax McCarty sat out training for precautionary reasons because of a minor groin injury suffered Wednesday. Defender Marc Burch has been bothered by a hamstring ailment and didn’t practice.

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*With his wife expecting the birth of their first child soon, back-up goalkeeper Steve Cronin, a former Portland player, will not travel with the team to Oregon and might rejoin the group in Los Angeles. Rookie Joe Willis will take his place on the game-day roster.

“The fact that we’re all the way on the West Coast makes it a little more difficult,” Cronin said. “I would never forgive myself if I missed the birth of my child.”

The due date is Friday, two days before what was supposed to be his return to a city where he played for two years and his wife worked as a TV host.

“As soon as the schedule came out, I looked at it and said, ‘Yeah, right.’ It was emailed to me and I thought it’s got to be some kind of joke [that the Portland trip coincided with the due date]. I was really excited to go, but in the grand scheme of things, it’s very minor.”

*Brazilian midfielder Junior Carreiro, Fred’s younger brother, remains out with a serious ankle injury suffered in preseason. “His ligaments were loose and they haven’t tightened, so it hasn’t strengthened,” Ashton said. “I know the possibility of surgery has been talked about, but I don’t know that a decision has been made.”

*The Timbers’ personality is a reflection of their coach, John Spencer. “He’s a fiery guy, he’s a passionate guy,” Ashton said. “Even if you watch him train, I remember he would do push-ups if he missed the goal. It wasn’t like the coach was forcing it on him; he was forcing it on himself.”

*United left wing Chris Pontius will face his former teammate and roommate, Timbers left back Rodney Wallace, for the first time. “We speak every couple of days, but it’s picked up the last couple of days,” Pontius said.

What’s the banter been like?

“He’s going to do this, he’s going to do that. He’s lucky he’s not on my side of the field. I might just run over there at some point.”

They were roommates for two years, in Adams Morgan and then Columbia Heights.