Prieto boasts an .890 OPS across 300 plate appearances in the minors this season, but he's gone just 1-for-31 at the plate with the parent club. He'll now return to Memphis to rediscover his swing, clearing room on the active roster for top prospect Joshua Baez.

The move will make room on the active roster for Cardinals prospect Joshua Baez, who will make his major-league debut against the Cubs on Saturday. Prieto was brought up from Triple-A on Aug. 4 but has gone 1-for-11 in five games since his promotion to the big leagues. He's been utilized as a depth piece in the infield but will see regular playing time in the minors.