Dobnak allowed four hits and two walks while striking out six over 5.2 scoreless innings in a no-decision versus the Angels on Saturday.
Seymour did not factor into the decision in Saturday's 4-3 extra-inning loss to the Orioles, allowing three runs on six hits and one walk with nine strikeouts over six innings.
Perez (elbow) will serve as the Royals' designated hitter and bat fourth Saturday against the Angels.
Gonsolin (elbow) threw a three-inning, 45-pitch live batting practice in Arizona on Friday, Jaylon T. Thompson of The Kansas City Star reports.
Mesa (hamstring) isn't in the lineup for Saturday's game against Baltimore, Marc Topkin of the Tampa Bay Times reports.
Witt went 1-for-3 with two runs scored and two walks in Friday's 7-6 win over the Angels.
The Rays optioned Roycroft to Triple-A Durham on Saturday.
The Rays recalled Boyle from Triple-A Durham on Saturday.
Caglianone went 3-for-4 with a home run, five RBI and two runs scored in Friday's 7-6 win over the Angels.
Massey went 3-for-4 with a home run and two RBI in Friday's 7-6 win over the Angels.
