The White Sox recalled Lambert from Triple-A Charlotte on Monday.

EDGE Analysis

Lambert has made just three appearances at the big-league level this season, giving up eight earned runs on 13 hits in eight innings of work. His 4.98 ERA in 18 Triple-A starts doesn't inspire much confidence, either. Even so, Lambert will likely be counted on to eat innings Tuesday in Oakland, either as a traditional starter or primary pitcher out of the bullpen. Matt Foster was optioned to Triple-A to clear a spot on the roster.