The Phillies optioned Rucker to Triple-A Lehigh Valley on Monday.
He'll give up his spot on the 26-man active roster and in the Philadelphia bullpen to right-hander Carlos Estevez, whom the Phillies acquired from the Angels over the weekend. Rucker has spent most of the season recovering from a right hand arterial vasospasm, but the Phillies brought him back from the 60-day injured list Friday. The righty didn't end up making any appearances out of the bullpen over the weekend in the Phillies' series with the Guardians, however.