In a recent match with special rules set for them, Royce Gracie faced off against Hidehiko Yoshida, and the two ended up sparing on the ground over seven minutes before the referee called an end to the match. The rules were set so the opponents could spar while standing but not while on the ground. The referee initially thought Gracie had been knocked unconscious, but the fighter got up and countered the call. The match ended with a draw, since neither had sparred for the full length of the second ten-minute round of this particular match.
https://www.youtube.com/watch?v=r1h6ryyeptM