Pruitt signed a minor-league contract with the Athletics on Sunday.
Pruitt hit free agency after being outrighted off Oakland's 40-man roster in November, but he's back with the organization on a minor-league deal. The 33-year-old appeared in 39 big-league games last season and had a 4.23 ERA across 55.1 innings, and he will likely receive an invitation to major-league spring training.