Baltimore Orioles second baseman Brian Roberts was scratched from Wednesday's lineup with a right rotator cuff strain.

Roberts said he isn't sure how he injured the shoulder, but said he woke up on Wednesday in pain. It is the same type of pain, though to a lesser extent, that kept him out of spring training games from March 5 to 19.

"It's one of those things that you hope a day or two will help save you two weeks," Roberts said. "Anytime you have something that doesn't feel normal, of course" there is some concern.

Trainer Richie Bancells said he would know more about the severity of the injury Thursday.

"It appears to be just a muscular strain," Bancells said. "It's not in the joint."

Roberts is Baltimore's hottest player. He extended his hitting streak to 20 games -- the longest in the majors this season -- on Tuesday and is batting .368, which leads the American League. Manager Lee Mazzilli said Roberts perhaps could have played, but the safe move was to keep him out of the lineup. Chris Gomez replaced Roberts at second base.

"I just decided not to play him," Mazzilli said. "He wanted to try."

Roberts, Tejada Lead Voting

Mazzilli was pleasantly surprised to hear that Roberts and shortstop Miguel Tejada each led their positions in the first all-star voting results.

"It's rightly deserved," Mazzilli said. "I think they've earned that honor of being recognized."

Tejada was on the all-star team in 2002 and 2004, but was not voted a starter in either year. Roberts would make the all-star team for the first time.

"I'm sure a lot of those [votes] are from our fans," Roberts said. "I think it shows we have a lot of our support back."

Ryan's Scoreless Month

B.J. Ryan did not allow a run in May, covering 151/3 innings.

"You just thank the guys who have scored so many runs for us," Ryan said. "You can be aggressive and pound the strike zone."

Entering Wednesday's game, Ryan was tied for fifth in the majors with 14 saves and had a 1.33 ERA.