Sinclair earned the save in Friday's 6-5 win over the Angels, allowing one run on one hit while striking out one batter in the ninth inning.
Cornelio allowed one hit and one walk while striking out four across two scoreless innings as the Nationals' opener in Sunday's 6-5 win over the Angels.
Lowe is out of the lineup for Sunday's game against the Cubs.
The Nationals activated Nunez (personal) from the bereavement list Sunday.
Irvin will no longer start Sunday's game against the Angels as previously scheduled and is instead expected to pitch behind opener Riley Cornelio, Mark Zuckerman of NatsJournal.com reports.
Cornelio will start Sunday's game against the Angels as an opener, Kyle Williams of TheBanner.com reports.
Irvin will no longer start Sunday's game against the Angels as previously scheduled, Kyle Williams of TheBanner.com reports.
Wood went 1-for-4 with a walk, a run scored and two stolen bases in Saturday's 6-5 extra-inning win over the Angels.
Alvarez didn't factor into the decision Saturday, allowing one hit and four walks over seven scoreless innings in a 6-5 extra-inning win over the Angels. He struck out eight.
The Nationals optioned Yean to Triple-A Rochester on Sunday.
