Naughton was optioned to Triple-A Memphis on Monday, John Denton of MLB.com reports.
Naughton was an odd man out with roster sizes dropping from 28 to 26 on Monday, leading to his return to Triple-A Memphis. After being called up April 22, the left-hander appeared in one contest, tossing 1.1 scoreless innings and only surrendering one hit. It's likely he will return to the Cardinals at some point this season.