Alvarado recorded four strikeouts over 1.2 perfect innings in a loss to the Red Sox on Wednesday.
Alvarado was particularly locked in during the seventh, when he sat down Xander Bogaerts, Rafael Devers and Eduardo Nunez on swinging strikeouts. The hard-throwing southpaw was coming off giving up a combined three earned runs over his previous two appearances, so Wednesday's outing represented a welcome departure and served as his first multi-strikeout effort since April 28.