After Scott is benched a subsequent shot shows him on the court.
When Scott begins letting the oil out of the car he's working on, the oil is obviously fresh due to the color of the oil and wouldn't need to be changed.
When Chris misses his second free throw the halftime buzzer sounds. A few seconds later it sounds again.
4:55 Mary arrives at an automotive shop where a fellow is draining oil from a vehicle on a lift. The oil looks brand new.
Marshall completely mis-describes the plot of Back To the Future II, including calling it the first Back To the Future.