I rewatched Whitaker/Hurtado the other day and forgot about the stoppage. This is an example where I clearly think the referee should have stepped in several punches sooner to save Hurtado.

Another example that we are all familiar with is Mercer/Morrison.

Other examples?

Benn/McClellan comes to mind. The man kept saying "I can't see"

Chavez-Leavander Johnson was the first fight that came to my mind. God bless Leavander. I teared a bit when I heard he died because of how much heart he showed.