Before yesterday’s doubleheader, Stephen Tarpley rejoined the Major League roster after coming off the 10-day injured list. Tarpley was injured because of a left elbow impingement, and just finished a rehab assignment for the Trenton Thunder: the Double-A affiliate for the Yankees.
Tarpley has spent the majority of the year mowing down Triple-A batters. For the Scranton Wilkes-Barre Railriders, he had a 3.13 ERA, 4.04 FIP, 9.66 K/9, 3.68 BB/9, 0.85 HR/9. However, at the Major League level this season, Tarpley has struggled. For the Yankees, he has an 8.24 ERA, 6.38 FIP, 10.98 K/9, 6.41 BB/9, 2.29 HR/9, and -0.2 fWAR.
Still, Tarpley has a shot to crack the postseason roster; especially if he can find his groove in the last two weeks of the season. He was added to the playoff roster during his rookie season last year as a left-handed option out of the bullpen. As the Yankees are getting ready for October, hopefully, Tarpley will be a valuable member on their 2019 postseason team.
ERA: Earned Run Average-the average number of runs a pitcher gives up in a nine-inning game. MLB average: 4.15 ERA
FIP: Essentially an ERA that’s more focused on what the pitcher can control without solely relying on his defense (strikeouts, walks, homers, hit batters). MLB Average: 4.20 FIP
K/9: Strikeouts per 9 innings. MLB average: 7.7 K/9
BB/9: Average number of walks around in a nine-inning game. MLB average: 2.9 BB/9
HR/9: Home runs allowed per 9 innings. MLB approximate average: 1.35 HR/9.
fWAR: Wins Above Replacement from Fangraphs. For example, If a player has 0.1 fWAR they are worth 0.1 wins more than a replacement-level player (0.0 fWAR). During the halfway mark of a season, a reliever with a 1.0 fWAR is about an average reliever.