Charlie Davies, D.C. United’s leading scorer who strained his right hamstring 11 days ago, is listed as doubtful for Sunday’s MLS match at Portland. Meantime, frontline partner Josh Wolff, who injured his groin on the same day, was upgraded to probable.

Davies seems more likely to play in the following match, June 3 at Los Angeles. Wolff said he expects to be available for selection to the game-day roster this weekend.

“I probably did more than they wanted me to do [at practice today], but it felt good, so I kept going,” Wolff said. “We’ll keep monitoring it. Today was a good day, so we’ll keep moving forward.”

Said Coach Ben Olsen: “I wouldn’t call him 100 percent right now, but we’re being as smart as possible. He looked good today.”

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As for Davies, who jogged around the field while the team practiced, ”This is day to day. We’ve got to be smart that he doesn’t re-injure that hamstring.”

Olsen, a former player, knows all too well that players are sometimes too eager to return from an injury.

“I’m learning individual personalities, and which guys you need to hold down and which guys you need to speed up. That’s all part of this process of managing players.”

Where does Davies fit into that equation?

“He’s a guy you have to hold down, as is Wolffy.”

*Defender Jed Zayner (hamstring) remains sidelined.

*Back-up goalkeeper Steve Cronin’s wife is expecting to give birth later this week, which will impact his availability for the trip to Oregon on Friday. If he stays behind, rookie Joe Willis will serve as Bill Hamid’s understudy.

*Former United assistant Kris Kelderman was named head coach at the University of Wisconsin-Green Bay.

*United hasn’t played away since the 4-1 loss at Houston on April 29. After the Portland visit, the team will fly directly to Los Angeles to prepare for the Galaxy game five days later.

*Late in Wednesday’s training session, Olsen scored on a pair of sweet one-touch finishes in the box.

“If the field was the size of the 18 [penalty area],” he said, “I’d still be an all-star in this league.”