Nola (5-10) took the loss Tuesday against the Mariners after allowing two runs on three hits and three walks while striking out seven over six innings.
The Nationals optioned Bird to Triple-A Rochester following Tuesday's game against the Rockies.
The Nationals are expected to recall Perales from Triple-A Rochester on Wednesday, Kyle Williams of TheBanner.com reports.
Waldron will serve as the opening pitcher in Wednesday's game against Colorado, Mark Zuckerman of NatsJournal.com reports.
Realmuto is out of the lineup for Tuesday's matchup with the Mariners.
Ruiz is absent from the lineup for Tuesday's contest versus the Rockies.
Chaparro is absent from the lineup for Tuesday's contest against the Rockies.
The Nationals designated Williams for assignment Tuesday.
Gray (elbow) is scheduled to make the third appearance of his rehab assignment Tuesday with High-A Wilmington, Mark Zuckerman of NatsJournal.com reports.
Vivas went 3-for-5 with two RBI, a run scored and a strikeout during a 13-3 win over Colorado on Monday.
