Not 100% sure but from what I understand,he took off with a cop holding onto his car and went 10-15 yards taking the cop with him.
The police report says the cop grabbed the car, was then knocked down after car kept moving, sustained an injured wrist that required some medical attention and his pants were torn.
More reports saying that Scheffler tried to use the middle lane to get into the club. The main road outside the entrance to Valhalla has one of those "median"/turning lanes for both directions. Traffic was stopped so he thought he could use that lane to get to the entrance and turn in, which others were doing. Cop finally had enough, stopped him and the rest is history.