-1I don't think being 50-0 makes him the best ever but his resume is stacked with impressive accomplishments. Floyd is a master strategist and at times chose his fights carefully but I wouldn't say he ducked anybody. He wasn't the type to fight anyone, anywhere, anytime but he took on many challenges. I would say he is one of the greats but it's easy to make an argument that guys like Chavez or Sugar Ray Robinson are better despite having losses. Most people don't say Rocky Marciano is the best heavyweight but he was undefeated.
Honestly if you follow mma, Mcgregor has skipped some of the challenges most champions would take on. He has faced few top level wrestlers and when he beat chad Mendez he was coming off the coach. He has won two belts and hasn't defended either one.
