Gregory Mills: Everything you need to know

The Dodgers optioned Mills to Triple-A Oklahoma City on Tuesday. Since getting the call to join the active roster May 10, Mills has allowed three earned runs on three hits and seven walks while striking out one batter in 3.1 innings across four appearances. He'll return to the minors to make room for Eric Lauer, though Mills will get to keep his spot on the 40-man roster for now.

The Dodgers selected Mills' contract from Triple-A Oklahoma City on Sunday. Mills will provide the Dodgers with a fresh arm in the bullpen after the team needed three relievers to cover the final six innings of Saturday's 7-2 loss to Atlanta. The 31-year-old righty received the promotion after logging a 3.26 ERA, 0.99 WHIP and 28:7 K:BB in 19.1 innings for Oklahoma City.

Mills signed a minor-league contract with the Dodgers on Monday, which includes an invitation to spring training, Sonja Chen of MLB.com reports. Mills is searching for a return to the major leagues after missing significant time while rehabbing from Tommy John surgery. He returned to the bump a season ago pitching for Triple-A Worcester, posting a 3.12 ERA and 1.29 WHIP with a 49:30 K:BB across 52.0 innings (seven starts). Mills will have the chance to compete for a bullpen slot after signing on with LA.