Treinen picked up his first save for the Athletics with a scoreless inning in Monday's win over San Francisco.
Treinen gave up a hit but recorded a strikeout to finish out the inning without issue. His numbers have been solid in Oakland -- 10 strikeouts in 9.1 innings, just one earned run allowed -- but Treinen blew two saves before managing to pick up his first one as an American Leaguer. Santiago Casilla may still pick up some save opportunities this season, but Treinen looks to be the future for Oakland.