The Reds optioned Friedl to Triple-A Louisville on Sunday.
Friedl's demotion leaves Matt Reynolds and Max Schrock as the Reds' backup outfielders behind everyday starters Nick Senzel, Tommy Pham and Albert Almora. During his latest stint in the big leagues, Friedl appeared in nine games and went 6-for-23 with two extra-base hits, three RBI, three runs and a stolen base.