That's probably what Kimbo was hoping on with Shamrock that a 40 some year old would be too shot to beat him. A prime Mercer would've done the same thing to Kimbo as he did to Morrison except he would've taken one round to do it.
I still can't believe Mercer lost to Kimbo Slice. That fact that Mercer was 46-47 years old shouldn't have mattered. With all of Mercer's boxing skill and knowledge, he should have been able to waylay a guy like Kimbo.