Orioles designated hitter Chris Davis was a late scratch from the starting lineup for Thursday's series opener against the Los Angeles Angels.

Davis, who is 4-for-12 with a homer and five RBIs in the first three games of the Orioles' seven-game West Coast trip, was shelved with a right trapezius strain in his upper back, Orioles manager Buck Showalter said.


He was hitting third and starting in right field, where he was replaced by rookie Ryan Flaherty.

The severity of the injury is unknown but Davis was seen icing his back before Thursday's game.

The trapezius muscle runs from the neck down to the shoulder and upper back and for a baseball player is critical in a player's throwing motion, which Showalter said has been bothersome for Davis.

Since snapping a season-worst 0-for-29 stretch against the Angels on June 17, Davis is hitting .290 (9-for-31) with two homers and nine RBIs in eight games.

In other news:

-- Rookie right-hander Miguel Gonzalez will make his first major-league start Friday against the Angels. Gonzalez grew up just an hour away from Anaheim in San Fernando, Calif., and expects about 50 family and friends in attendance.

-- First baseman Joe Mahoney, recalled Thursday, joined the team in Anaheim and was available. He filled the spot vacated by Chris Tillman.

-- Orioles top pitching prospect Dylan Bundy was ranked the top prospect in Baseball America's midseason top-50 prospect list. Double-A Bowie shortstop Manny Machado was ranked ninth.

--Right fielder Nick Markakis (wrist surgery) continued to progress with batting practice at Aberdeen and is slated to begin playing games Saturday for Double-A Bowie in the first of three game there.

-- Second baseman Brian Roberts had an MRA on his hip in Baltimore, but the results of the test hadn't been read before Thursday's game.

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