Duffey likely won't be able to pitch again until Thursday after registering a three-inning save in the second game of Monday's doubleheader against the White Sox, the Mike Berardino of the St. Paul Pioneer Press reports. After struggling in July with a 7.36 ERA, Duffey has given up just one run in 9.1 innings with a 7.7 K/9 in August. The Twins remain a bit unsettled at the back end of the bullpen following the July 31 trade of Brandon Kintzler, but Duffey still seems to rank behind at least Matt Belisle and Trevor Hildenberger in the pecking order for saves.
Duffey has posted a 4.63 ERA, 1.35 WHIP and 46 strikeouts in 46.2 innings in his first season as a reliever. After coming up in the Twins' farm system as a starter, Duffey struggled in the rotation for two seasons before moving to the bullpen. Now as a reliever, Duffey has been able to pump up his velocity to 92 mph on average, and with that increase has come an improvement in strikeout rate.
Duffey has a 3.68 ERA and 9.6 K/9 in his first season as a reliever. It's beginning to look like the Twins made the right choice in moving their young pitcher to the bullpen. After posting an ERA of 6.43 with 7.7 K/9 in 26 starts last season, the right-hander has shown great improvement in both categories this season. Add on the six holds he's recorded along the way, and this season could be the start of a bright future for the 26-year-old.
Duffey has a 2.10 ERA and 0.94 WHIP over 25.2 innings this season. The 26-year-old started 36 games for the Twins over the last two years but is finding success this season in a bullpen role. Duffey's low WHIP is the result of his stellar BB/9 of 1.8 and opposing batting average of .202. The right-hander will often pitch multiple innings but has yet to see many high-leverage situations.
Duffey gave up two runs while retiring one batter in Thursday's loss to Cleveland. He had thrown 8.2 scoreless innings to begin the season. Duffey gave up an infield hit and another soft single, so his outing wasn't necessarily the end to his initial successful conversion to the bullpen. Duffey has a decent 8.0 K/9 and has walked just one batter, so he could see his role grow in a bullpen that has struggled in the past week.
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