Roster move coming Saturday

The Orioles' pitching staff will undergo some sort of adjustment before Saturday afternoon's game against the Cardinals at Camden Yards. Manager Buck Showalter told reporters in Toronto that Ubaldo Jimenez will come off the disabled list and start Saturday, which will necessitate a corresponding roster move. Jimenez has been on the disabled list with an ankle injury. He made two starts on a rehab assignment, but he hasn't pitched for the Orioles since Game 2 of a July 5 doubleheader in Boston, when he allowed four runs and five hits and walked six batters in 3 2/3 innings. In his previous start against the Rangers, Jimenez permitted an unearned run and four hits in eight innings. Jimenez still leads the American League with 60 walks, six behind the Phillies' A.J. Burnett. With Jimenez returning to the rotation, the Orioles must eliminate a pitcher from the 25-man roster. Does another starter go into the bullpen? Showalter prefers to give Wei-Yin Chen and Miguel Gonzalez extra rest when the schedule allows it. He doesn't seem to embrace the notion of a six-man rotation. Or perhaps it's just the repeated questions about it. T.J. McFarland has options and could be sent down to Triple-A Norfolk. Gonzalez could move to the bullpen. Stay tuned. Jimenez is 2-3 with a 3.33 ERA in eight career starts against the Cardinals. He faced them most recently in a 2012 start for the Indians, surrendering one run over seven innings. In his only start in 2011, Jimenez permitted six runs and 12 hits in six innings. In two starts in 2010, he allowed one run and struck out 16 batters over 16 innings. In two starts in 2009, Jimenez allowed six runs and struck out 16 in 15 innings. He gave up six earned runs (seven total) in 10 innings over two starts in 2008. Chris Tillman is starting Friday night. The Orioles haven't listed a starter for Sunday, but Showalter told reporters that Kevin Gausman and Bud Norris are candidates. His interview aired on "O's Xtra" on MASN. A reminder that the Orioles will hold their 60th anniversary celebration Friday night at Camden Yards. Come for the game, stay for the fireworks and laser show. The list of former Orioles on hand will include Brooks Robinson, Frank Robinson, Eddie Murray, Cal Ripken Jr., Jim Palmer, Brady Anderson, Bill Hunter, Milt Pappas, Don Buford, Eddie Watt, Boog Powell, Al Bumbry, Doug DeCinces, Rick Dempsey, Dennis Martinez, Tippy Martinez, Scott McGregor, Ken Singleton, Mike Bordick, Chris Hoiles, Gregg Olson and B.J. Surhoff.