Tellez was optioned to Triple-A Buffalo on Tuesday.
Tellez hasn't proved to be worthy of everyday at-bats this season, as he's struggled to a .209/.272/.338 slash line in 151 trips to the plate. Now that George Springer is back from his quadriceps injury, there's no room for Tellez in the lineup, so he'll head to the minors in hopes of getting his groove back with regular playing time.