BALTIMORE -- Jake Arrieta will get another start, as the struggling 26-year-old is expected to start Friday's series opener against the Philadelphia Phillies. Manager Buck Showalter said Saturday's starter is to be determined, with Jason Hammel scheduled for Sunday.

The Orioles are currently employing a four-man rotation, and Saturday is the first day they need a fifth starter. While 24-year-old Zach Britton is making his third rehab start Tuesday night, Showalter said he's not a candidate to be activated this weekend.

"Nothing really imminent there with him," Showalter said of Britton, who has been on the disabled list with a left shoulder impingement since late May. "He's got a lot of roads to cross before we consider him."

Asked what Britton, who went 1-0 with a 0.75 ERA in two rehab outings for Double-A Bowie, has to show the Orioles, Showalter said it's about results.

"It'll be interesting to see if he pitches as well as Tommy [Hunter] did there, too -- and as well as [Chris] Tillman's pitching and [Jason] Berken," said Showalter. "Right now, we intend to garner some depth there below us."

All three of the aforementioned pitchers are options to start Saturday, and Showalter didn't rule out the possibility of having a reliever -- such as Dana Eveland or Miguel Gonzalez -- make the start. The team has several multi-inning relievers and could opt to go with a bullpen game depending on the status of the relief corps.

McLouth inks Minors deal with Orioles

BOSTON -- The Orioles signed veteran Nate McLouth to a Minor League deal on Tuesday, and he will report to the organization's Triple-A Norfolk affiliate.

McLouth, 30, was placed on release waivers by the Pirates, who signed him to a one-year deal this winter, after he hit .140 with no homers and two RBIs in 34 games. An All-Star and Gold Glove Award winner in 2008, McLouth had back-to-back 20-home run seasons in '08 and '09 and was traded to the Braves in July of that season as part of a fire sale by Pittsburgh. But he was never able to match those years with the Bucs, a combination of injury and underperformance that limited him to 81 games last season for Atlanta. He hit .228 with four homers and 16 RBIs over that stretch before the Pirates re-signed him this offseason.

The move adds outfield depth for Baltimore, which is still without corner outfielders Nolan Reimold and Nick Markakis. There is no timetable on Reimold's return, while Markakis is a week away from getting the stitches removed from his right wrist, which is recovering from surgery to remove a broken portion of his hamate bone. McLouth is expected to join the Tides on their current road trip in Rochester.

Tidbits

• Catcher Taylor Teagarden (lower back injury) has been cleared to start hitting at extended spring.

• Prospect Nicky Delmonico was named the starting first baseman for the Northern Division in the South Atlantic League All-Star Game on June 19 in Charleston, S.C. Delmonico, the Orioles' sixth-round selection in the 2011 First-Year Player Draft, is the only member of Class A Delmarva to be invited. He leads the team in several major statistical categories, including hits (53), RBIs (33), total bases (83), doubles (15) and home runs (five).

• Despite being rumored to be focused on pitching with their first-round Draft pick, manager Buck Showalter said the Orioles were very interested in shortstop Carlos Correa, who went first overall to the Houston Astros in Monday's First-Year Player Draft. The Orioles selected LSU right-hander Kevin Gausman with the No. 4 pick.

• Wilson Betemit, who sat out Sunday's game vs. the Rays with a fever, is still under the weather and was not in Tuesday's starting lineup.