BOSTON -- The Orioles held right-hander Tommy Hunter out of his scheduled start at Triple-A on Thursday, as the 25-year-old is one of two options to make Saturday's start in Baltimore against the Phillies.

"We've done things to keep all our options open," manager Buck Showalter said, "so I think the next two days see how we come out of the bullpen. [We've] got some good options out of there if we want to go in that direction Saturday. It was only prudent to keep all our options open with Tommy."

The Orioles are currently employing a four-man rotation, and Saturday is the first day they need a fifth starter. Prior to Thursday's game, Showalter said relievers Dana Eveland and Miguel Gonzalez were also candidates, but Gonzalez pitched four innings Thursday in relief of struggling starter Brian Matusz.

"Miguel was an option, and obviously not after tonight," Showalter said. "We may need Eveland [on Friday]. We'll see."

Eveland last pitched Sunday against Tampa Bay and will be the team's long man, if necessary, for Friday's series opener against the Philadelphia Phillies. Right-hander Jake Arrieta, who is 0-5 with a 7.96 ERA in his last six outings, is starting that game.

Hunter is 2-3 with a 5.59 ERA in 10 starts for the Orioles and has made one start at Triple-A Norfolk. Eveland went 3-2 with a 2.21 ERA in six starts for Triple-A.

Orioles acquire pitcher from Atlantic League

BOSTON -- The Orioles have purchased the contract of left-handed pitcher Rich Rundles, who was pitching for the Atlantic League's Lancaster Barnstormers, and assigned him to Triple-A.

The Barnstormers' Web site announced the transaction on Thursday afternoon. The 31-year-old Rundles was 2-1 with a 3.02 ERA in eight starts. In his 47 2/3 innings, Rundles allowed 40 hits, 11 walks and struck out 40.

Rundles was selected by the Red Sox in the third round of the 1999 First-Year Player Draft when current executive vice president of baseball operations Dan Duquette was Boston's general manager.

Rundles played in the Minor Leagues with six different organizations from 1999-2007 and he appeared in eight games with Cleveland in '08 and one in '09. In nine games, he posted a 1.50 ERA and is the second left-handed starter the Orioles have signed in as many days, joining veteran Jamie Moyer.

Last year, Rundles appeared in 35 games with Triple-A Memphis, going 1-3 with a 1.80 ERA.

Tidbits

• Mark Reynolds started at first base again Thursday, with Chris Davis at designated hitter. Davis, who was the Orioles' starting first baseman coming out of camp, hasn't gotten a start at first since May 28 in Toronto.

Asked the reasoning behind the recent moves, Showalter said: "I think everybody would rather be in the game defensively, but Mark has played OK over there. Chris, I think, can handle the DH spot. I think there's a lot more to it than just the physical four or five at-bats, there's a mentality to it, too. They can both play first, they can both DH if they have to to. So far, Mark seems to have adapted pretty well."

• Right-handed starter Jason Berken suffered a broken nose Thursday on a sixth-inning collision with 6-foot-6, 240-pound first baseman Joe Mahoney for a foul popup in Triple-A Norfolk's game.

"I don't think we're worried about how Mahoney is," Showalter said. "Basically, [Berken's] not going to do anything as far as resetting it right now. Depends on how much his eyes swell up. Right now, he's scheduled to start again."

• Second baseman Brian Roberts had a scheduled day off Thursday afternoon after playing second base and batting leadoff for Triple-A Norfolk the previous two games. Roberts is on a rehab assignment that ends Monday.