At the end of the first lap it's Rainey, Lawson, Wayne Gardner, Christian Sarron, De Radiguès, et al. Lawson passes 3 riders on the straight as if he's angry for his performance at Donington.
Lawson soon through on Rainey and gets a large lead on a group with Gardner, now in 2nd and Rainey in 3rd.
Lawson almost highsides out of first place, but keeps it together to the end. Rainey fades to 5th.