FORT LAUDERDALE, Fla. -- The Orioles signed Adam Eaton to a Minor League contract with an invite to Spring Training on Sunday, adding another veteran arm to the mix of contenders for the starting rotation.

Eaton, who was released by Philadelphia on Friday, has a 68-63 record and a 4.80 ERA for his career. The right-hander hasn't had an ERA under 5.00 in any of the past three seasons, but he's made at least 13 starts in the big leagues in every season since 2003. Baltimore's rotation, by contrast, has a dearth of Major League experience behind Jeremy Guthrie.

Two of the early favorites for the rotation vacancies -- Brad Hennessey and Rich Hill -- have been temporarily slowed by elbow soreness. Danys Baez and Troy Patton are both coming off seasons lost due to injury, and Eaton's signing may allow the Orioles to relieve the stress on the team's pitching prospects this early in Spring Training.

Eaton, the 11th overall pick in the 1996 First-Year Player Draft, went 4-8 with a 5.80 ERA last season and 10-10 with a 6.29 ERA in 2007.