MINNEAPOLIS -- Willians Astudillo and Martin Pérez have returned to the Twins' roster.

Astudillo was reinstated from the 10-day injured list following his recovery from a left hamstring strain, and Perez was reinstated from the paternity list in time to make his scheduled start in Sunday afternoon's series finale against the Tigers. Astudillo was behind the plate and hit leadoff for Minnesota.

To make room for Astudillo on the 25-man roster, Fernando Romero was optioned to Triple-A Rochester. Kohl Stewart was also optioned back to Rochester following six effective innings in Saturday night's 8-3 win over Detroit to clear a spot for Perez. Right-hander Tyler Duffey, who served as the 26th man in the doubleheader, was also returned to Triple-A.

Astudillo, who was hitting .327/.340/.531 with two homers and four doubles before his injury, had missed 13 games while sidelined with the hamstring strain, which was sustained in an April 27 game against the Orioles as he sprinted home to score on a sacrifice fly.

Romero was recalled from Rochester on April 24 and allowed two earned runs in six innings across six appearances, with eight strikeouts and three walks in that span. He allowed runners to reach base in five of those six outings, though he did not yield a run in his last five games.