Aaron Barrett had a rough month of May. After taking the loss in Sunday's debacle, the second year reliever finished with a 10.29 ERA and 1.86 WHIP for the month.
Entering play on Friday, the Washington Nationals bullpen had been outstanding in May. They'd allowed just 23 earned runs in 73.1 innings on the month, good for a 2.82 ERA. Of course, one weekend got to show us just how volatile relievers can be. Nationals relievers threw 10.2 innings in the three game series in Cincinnati. They allowed 14 runs (all earned) and took all three losses as the Nats were swept in the Queen City.