The Phillies optioned Falter to Triple-A Lehigh Valley on Sunday.
As expected, Falter was returned to Lehigh Valley after being designated as the 27th man for Saturday's doubleheader with the Mets. He started the second game of the twin bill and picked up the win after striking out three over six innings of one-run ball. Falter should be the top choice to enter the rotation if the Phillies require a new fifth starter at any point over the final six weeks of the season.