Poulin will serve as the opening pitcher in Saturday's game against the Yankees, Mark Zuckerman of NatsJournal.com reports.
Poulin will receive his 11th opening assignment of the season and will likely remain in the game for an inning or two before turning the game over to bulk reliever Miles Mikolas. Poulin has given up just two runs in 10.1 innings since coming up from the minors in mid-June and carries a 2.83 ERA through 35 frames on the year.