[Stay Golden]

Usually if a person gets ko'd they go down in a heap. There is no protecting themselves, they are out. He gently slid down and braced his fall.
Dazed perhaps as he was punched and lost his balance. Knocked down but definitely not knocked out.
No doubt the player connected to his nose/chin, maybe the ref saw white lightning i doubt it.
Wrong place wrong time i doubt if the player did it on purpose.