A relative unknown entering 2018, Trivino got the call up in mid-April and went on to become one of manager Bob Melvin's most trusted relievers at the back end of the Oakland bullpen. He did seem to run out of gas late in the year -- Trivino said it was just a lack of execution -- but his overall body of work was quite impressive. Working mostly four-seamer (97.6 mph)/cutter (92.4 mph), Trivino struck batters out at a 27.4% clip and held opponents to a sub-.200 batting average. He tied for 16th in the American League in appearances, racking up eight wins and four saves along the way, and finished with a 14.6% swinging-strike rate, which was a top-25 mark among qualified relievers. The estimators all suggest he overachieved by a decent margin, and regular save chances are highly unlikely with Blake Treinen, Fernando Rodney and Joakim Soria all ahead of him in the pecking order, but Trivino is on the radar as a ratios-eating staff filler. Read Past Outlooks