Astros signed RHP Charlie Morton to a two-year, $14 million contract.
Phillies declined their $9.5 million mutual option on RHP Charlie Morton.
Phillies transferred RHP Charlie Morton from the 15-day disabled list to the 60-day disabled list.
Charlie Morton needs surgery for a torn hamstring and is done for the remainder of the season.
Phillies manager Pete Mackanin said Tuesday that the MRI on Charlie Morton's strained left hamstring "wasn't as good as we were hoping."
Phillies placed RHP Charlie Morton on the 15-day disabled list with a strained left hamstring.
Charlie Morton left Saturday's game against the Brewers with a strained left hamstring.
Charlie Morton delivered six innings of one-run ball in the Phillies' extra-innings defeat of the Nationals on Sunday afternoon at Citizens Bank Park.
Charlie Morton had his sinker working Tuesday, striking out seven over 6 2/3 shutout frames in a 3-0 win over the Padres.
Charlie Morton was charged with six runs in 3 2/3 innings Thursday in a loss to the Reds.
Charlie Morton gave up five runs in four innings Friday in a win over the Pirates.
Phillies acquired RHP Charlie Morton from the Pirates for RHP David Whitehead.
Charlie Morton served up five runs in two-plus innings, losing the second game of Wednesday's doubleheader against the Cardinals.
Tuesday's game between the Pirates and Cardinals has been postponed due to rain.