Oviedo was optioned to Triple-A Memphis on Monday, John Denton of MLB.com reports.
Oviedo made 14 appearances (13 starts) for the Cardinals in 2021, but he'll be left off the team's Opening Day roster this year. He posted a 6.13 ERA and 1.55 WHIP in 54.1 innings across 12 appearances (11 starts) in Memphis last season and should be a candidate to fill in as a starter in the majors at some point in 2022.