"He's still sore," manager Terry Francona said. "We're going to stay away from him."
Shortstop Marco Scutaro, who was also scratched from Friday's lineup with a sore back, was in the lineup Saturday. Francona said the club would watch Scutaro during batting practice Saturday and make another evaluation.
Youkilis has now missed three of the last five games and six of the past 39 contests. He went a combined 1-for-8 in the Minnesota series and is hitting .267 this season.