Chafin recorded two outs and walked a batter in the eighth inning of Sunday's11-0 win over the Giants.
With the Diamondbacks nursing a 2-0 lead, Chafin entered the contest in the top of the eighth and walked Joe Panik, but he erased him on a double-play groundout from Brandon Crawford. David Hernandez came on to record the final out of the frame before the Diamondbacks' offense exploded for nine runs in the bottom half of the inning, allowing Chafin to pick up his 16th hold of the season. He trails only Archie Bradley (17) in that category among the team's relievers.