My professor fought Magid Hage and lost by advantages but said he is just constantly searching for the Baseball grips. My prof knee bared him and heard a pop but he kept going.... tough dude.
i have 2 things i do to stop the knee on neck escape to arm bar.
1) run the legs around north south as i am locking it in, Its really hard to get the armbar then. or 2. Hook a leg then roll to the my front. With their leg hooked they cant step over or come up to knee on neck
2mins in you see me get the choke finalizing it as he tries to posture out by walking round. (first comp at blue belt)
https://www.youtube.com/watch?v=1nYioL0ADH4