Salazar, troubled by injuries to his right arm the last two seasons, pitched Thursday for the first time since the 2017 American League Division Series. He allowed two runs in four innings against Houston on Thursday. Afterward, he said his groin bothered him during the game.
Salazar made the All-Star team in 2016, but has been dealing with injuries since. He didn't pitch last season and had shoulder surgery last July.
Pitcher Tyler Olson has been placed on the 10-day IL because of the shingles. Manager Terry Francona said Olson has been bothered by the illness for several weeks.