Abner will reclaim a 40-man roster spot with the move to San Francisco, though he'll have to wait a bit before making his debut with the Giants. The 24-year-old lefty reliever made eight appearances with Arizona at the big-league level this season, posting a 6.28 ERA, 1.53 WHIP and 6:8 K:BB over 14.1 innings.

Abner made just three appearances after being recalled from Reno on Aug. 5. Over five innings, the left-hander allowed three runs on six hits and two walks while striking out just one batter. The Diamondbacks selected Dennis Santana's contract to replace Abner on both the active and 40-man rosters.