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6/6/2013 12:00 A.M. ET

Bourjos aiming for Monday return to Angels

ANAHEIM -- It appears Peter Bourjos' return to the Angels' lineup could come on Monday, when the team opens a three-game set in Baltimore.

Bourjos -- who has been out since April 29 with a strained left hamstring -- will play center field for Class A Inland Empire on Thursday night, then join Triple-A Salt Lake for the rest of his rehab.

"Three days in Salt Lake, then we'll see where he is," Angels manager Mike Scioscia said. "Hopefully he's ready."

While Scioscia did not say anything definitive, Bourjos plans to play with Salt Lake on Thursday, Friday and Saturday. The Bees have a night game Saturday, and the Angels have a day game in Boston on Sunday, so barring any setbacks, Monday against the Orioles looks like Bourjos' target date.

In two games with Inland Empire, Bourjos is 2-for-7 with a triple and a home run.

Upon returning, Bourjos will take over center-field duties with Mike Trout moving back to left. In the 22 games prior to his injury, Bourjos hit .313 for the Angels.

Halos make 'tough' call, send Williams back to 'pen

ANAHEIM -- Despite Jerome Williams' five straight quality starts, the Angels have moved the veteran right-hander from the starting rotation to the bullpen.

"The bottom line is we have six guys that are starting for us, that are throwing the ball well," Angels manager Mike Scioscia said. "I think Jerome has the opportunity to be a wild card, whether he's back in the rotation or helping us with an appreciable role in the bullpen. He's going to help us and right now, as we pare down to five, there's definitely a role for him in the 'pen."

Although Williams was 3-2 with a 3.08 ERA as a starter, the move did not surprise him as he expected the team to stick with its initial rotation of Jered Weaver, C.J. Wilson, Jason Vargas, Tommy Hanson and Joe Blanton.

"I've kind of seen it coming," Williams said. "But in this game you never know. All I've got to do is go out there and prepare myself in a certain way."

While the writing may have been on the wall for Williams, the decision was not easy for him to take.

"Of course I'm disappointed, but you know what, that's their decision," Williams said. "Like I said the day before, I'll do anything I have to do to have a winning team. If that means going to the bullpen, I'll go to the bullpen."

Because of Williams' recent success in the rotation, Scioscia said the decision was "tough," but having six pitchers throwing well is a good problem for a team to have.

Williams may have temporarily lost his spot in the rotation, but he appears to have earned himself a more prominent role in the bullpen than the long-relief role he held when the season began.

Scioscia also did not rule out the possibility of Williams returning to the rotation if the situation should arise.

In the meantime, Williams is not worried about any of that and is is simply going to take the ball when called upon.

"It doesn't matter," Williams said. "Anytime I get the ball, I'll perform."

Worth noting

• Right-handed reliever Dane De La Rosa was optioned to Triple-A Salt Lake after Wednesday's 8-5, 10-inning loss to the Cubs. A corresponding roster move won't be announced until Friday, when the Angels open a three-game series in Boston.

De La Rosa is 1-1 with a 4.05 ERA in 27 appearances for the Angels this season.

• Third baseman Alberto Callaspo has committed four errors -- three of them throwing -- in the previous three games entering Wednesday, but manager Mike Scioscia is not worried because of Callaspo's track record at the position.

"Every player, from time to time, is going to have some little glitches -- Alberto has been hit with his this week," Scioscia said. "I think it's just a little slump and he'll be back where he needs to be."

• It was no secret the Angels were short on depth, but when Brendan Harris started Tuesday's game at first base and Howie Kendrick played the eighth inning in left field, the lack of depth was obvious.

"I think we massaged every move we could last night," Scioscia said. "You'd like a little more versatility on the bench."

Scioscia acknowledged that the Angels are looking at options and will likely add some depth to their bench once the pitching staff "settles a bit."

William Boor is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.