The Orioles moved to 5-3 with a 5-1 win over the Rays on Sunday.
Cole Sulser has a 4.50 ERA in four games in 2020.
The Orioles are just 1.5 games out of first place in the AL East after a three-game sweep of the Rays.
Núñez homered for the second straight game on Monday in a 5-1 victory over the Rays.
Juan Soto is not in the starting lineup, but Davey Martinez says the young star is available to pinch-hit Tuesday night.
Paul Mancano and Mark Zuckerman discuss what to expect from Juan Soto and the Nats this week.
Tanner Rainey leads the Nationals pitching staff with five appearances this season.
Tommy Milone allowed just one run over five innings in Sunday's 5-1 win over the Rays.
Stephen Strasburg threw off a mound without pain, but probably won't make his season debut until the weekend.
