The Reds recalled Moreta from Triple-A Louisville on Sunday.
Outfielder TJ Friedl was optioned to Louisville to clear room on the 26-man active roster for Moreta. The 26-year-old right-hander was able to secure a spot on the Reds' Opening Day roster, but he labored across 15 appearances before being sent to Louisville on May 12. Over his 13.2 innings with the Reds, Moreta was charged with 15 earned runs on 15 hits and six walks while striking out 16.