Detwiler originally came to Oakland last July after a trade from the Indians, and the southpaw posted a 6.14 ERA, 4.7 K/9 and 3.1 BB/9 over 44 innings (seven starts in nine outings) in the green-and-gold. Detwiler signed a minors contract with the A’s over the winter but opted out of that deal at the end of Spring Training, only to sign a new deal with the club the next week.
Pitching exclusively as a reliever at Triple-A, Detwiler had a 7.50 ERA through 12 innings, though Slusser notes that the lefty had pitched better as of late, with just a 1.17 ERA in May. Still, it seems as if a call-up to the A’s roster wasn’t in the card, so Detwiler will now look for an opportunity elsewhere.
Best known for a productive stint as a swingman with the Nationals from 2009-14, Detwiler has struggled over the last two seasons, posting a 6.73 ERA over 107 IP with the A’s, Indians, Rangers and Braves. Never a big strikeout pitcher (only a 5.5 career K/9), Detwiler has had increased troubles allowing walks and homers for the last two years, reducing his margin of error to zero.