Personal Fouls Enforcement

[Blue37]

A throws an interception near B's goalline. During the return, B21 throws a hard, but legal, block on A10 at the B24. A10 takes exception to the block and tries to remove B21's helmet with his head still in it. B21 wants to keep his head, so he strikes A10 with a closed fist. A10 does not appreciate being struck, and retatiates with his own fist. Several blows were exchanged. To break up the fight, the covering official blew his whistle while B2 was running with the ball at the A20.

Let me see if we got it right. I'll tell you what we did after some responses.