It's very obvious that the UFC exaggerates these guys heights, but you don't realize how much until you actually meet one. I met Khabib a while back at a promo meet and greet for UFC 220. He's a solid 5'9- 5'9 1/2. with sneakers on. Which means: GSP is actually about 5'9 Michael Johnson looks to be about 5'7 Mcgregor is about 5'8 Most impressive though, is that Cormier's is no more than 5'9 1/2 - 5'10, and he's been dominating both LHWs, and HWs his entire career. These dudes seem like giants on TV, but in reality, just average looking people, with above average heart, drive and determination.