DETROIT — Warriors center Zaza Pachulia has been ruled out of Friday night's game against the Pistons with a sore left shoulder. In Sunday night's 123-95 win over the Heat, Pachulia had eight points, four rebounds and two assists in 18 minutes. He woke up Monday morning with some pain in his shoulder and was ruled out for that night's win over the Pelicans after it still bothered him during pregame warmups. Pachulia started Wednesday's win over Hornets, but didn't return after heading to the locker room less than five minutes in with a recurrence of shoulder pain. He underwent an MRI on Thursday, which came back negative.