The Phillies optioned Sanchez to their alternate training site Tuesday, Matt Breen of The Philadelphia Inquirer reports.
Sanchez will leave Philadelphia without making an appearance, as he went unused out of the bullpen in Monday's 2-0 loss to the Giants following his call-up earlier that day. Left-hander Bailey Falter will take Sanchez's spot in the bullpen and on the 26-man active roster.