Manaea is dealing with minor discomfort in his left leg and will thus stay at the A's facility in Arizona when the big club leaves Wednesday, Susan Slusser of the San Francisco Chronicle reports.
Confirming the nature of the injury, Manaea told Joe Stiglich of CSN Bay Area that the tightness resides in his left groin, but it will ensure that a productive spring doesn't translate to major league outings off the bat. Speaking of his Cactus League, Manaea conceded eight runs (seven earned) on 14 hits and seven walks, yet he racked up 16 strikeouts in 14.1 innings. Expect him to start the season at Triple-A Nashville or Double-A Midland.