Yep Mayweather to win by a knockout, it's a boxing match and it's basically a talented amateur fighting a professional. There's always the chance Mcgregor will land a lucky blow though. The other thing in Mcgregors favour is his age- at 29 he's in his prime. If it does go the distance Mayweather as a 40 year old will suffer. I'll catch the repeat with the usual Sunday hangover.
Treat everything in life the way a dog would- if you can't eat it or foc it, forget it.