Manaea (arm) was placed on the 15-day DL on Tuesday.

EDGE Analysis

Manaea had to leave Monday's start early and was diagnosed with a pronator strain in his left forearm. The lefty does not currently have a timetable, but Oakland figures to err on the side of caution with the 24-year-old. Eric Surkamp was recalled to the major league roster in a corresponding move and figures to take Manaea's spot in the starting rotation during his absence.