The Washington Nationals recalled right-handed reliever Blake Treinen on Thursday and sent fellow right-handed reliever Aaron Barrett to Triple-A Syracuse.
Treinen was sent to the minors July 21 after a bumpy season had pushed his ERA to 4.39. In particular, Treinen had no solution against left-handed batters who hit .346 against him before he was sent to the minors. In five appearances with Syracuse, Treinen did not allow a run in 12 innings. He struck out 14, allowed six hits and walked one.
Barrett is viewed as a right-handed specialist out of the Nationals’ bullpen. But, his ERA rose to 4.