Luis Castillo (8-16) took the loss Thursday against the Nationals, allowing two runs on three hits across six innings. He walked three and struck out six.
Castillo leads the MLB with 16 losses, though this one was not ugly in the slightest. He was cruising until the sixth, when he allowed a solo home run to Juan Soto. Castillo was surprisingly outdueled by Patrick Corbin on the other side. Castillo has a 4.05 ERA and 1.35 WHIP across 182.1 innings this season with 187 strikeouts.