Here’s a solid explanation of what went wrong when Hazelett attempted rubber guard in the recent UFC. There was a lot of talk on the internet about the rubber guard and whether or not it is effective after Bocek’s easy pass. The rubber guard is just like any other guard. It’s certainly not the kryptonite that some people would have you believe, but it’s definitely a good tool. It is especially useful for people with long legs and getting into omoplatas.
Here is a link to the fight from MMA-Core. Some sick grappling by both of them.
You can skip to 1:30 to pass all of the chatter.