Arrieta (hamstring) was reinstated from the 10-day injured list ahead of Friday's start against the Nationals.
EDGE Analysis
Arrieta missed just over three weeks due to a tight right hamstring, but he'll be back on the mound Friday after right-hander Trevor Williams was traded to the Mets. The 35-year-old had posted an 11.02 ERA and 2.33 WHIP in 16.1 innings across his five starts prior to his injury.