Despite his lackluster MLB stats this season, Mastrobuoni appears to have rediscovered his swing over the last several weeks. He appeared in 13 games during his last major-league stint in July and slashed .324/.375/.432 with three RBI and 10 runs scored. Once he was optioned to Triple-A, his hot hitting continued with a .959 OPS since Aug. 1. Mastrobuoni will likely serve in a bench role with the Cubs, but the team could look for ways to get his hot bat in the game. Tucker Barnhart was DFA'd in a corresponding move.