Chafin picked up the save in Monday's 3-0 win over the Brewers by striking out the side during a perfect ninth inning.
Chafin came on in the ninth inning with a three-run lead and proceeded to strike out Joey Wiemer, Christian Yelich and Willy Adames en route to his second save of the season. The left-hander has yet to allow a run across five appearances (4.1 innings) while striking out seven versus just two walks. Scott McGough, who blew a save last week, has operated in hold situations in each of his past two appearances, so it appears Chafin has the early edge in Arizona's closing competition.