Guys, before I get flamed ive been an on off fan for 10 years. Only a big fan for 18 months. Im basing this on purely what ive seen. Unfortunately I have never seen cain fight live so he is excluded. Present. 1. Mcgregor 2. Lawler 3. Hendricks 3. Rumble - dude has serious power tied 3rd. Has the potential to go 1st if he keeps it up. All Time/Past. 1. Liddel 2. Lawler - Mcgregor is excluded because of his short time in the UFC. 3. Belfort Like to point out anyone else noticed that when Mcgregor and Hendricks in particular hit guys it actually looks like there not hitting them that hard at all. Guys just fall though..... I find this amazing as a viewer.