Ross must spend at least 10 days in the minors after being optioned to Triple-A Syracuse, which likely rules him out for Sunday's start against the Phillies, Jorge Castillo of The Washington Post reports.

EDGE Analysis

The Nats could find a way around that rule by placing someone on the DL to open up a 25-man roster spot for Ross, but otherwise the 23-year-old may have to wait a couple weeks before making his 2017 debut. Jeremy Guthrie appears to be the first choice to take that Sunday start instead.