Wrobleski is expected to serve as the Dodgers' primary pitcher behind an opener Sunday versus Washington, Sonja Chen of MLB.com reports.
Wrobleski was moved to a bullpen role upon his activation from the injured list Sept. 1, and he tossed two innings in relief against St. Louis that day. The left-hander hasn't appeared in a game since then, so his arm should be able to handle a hefty workload in the series finale versus the Nationals. The Dodgers haven't yet announced who will be opening Sunday's contest.