I think Mayweather's plan was to tire Connor out, that's fairly obvious, but McGregor took it too him pretty hard in the first three rounds. By the fourth, Mayweather started to come out of his shell and actually got a good blow by McGregor, but that round was by no means a clear win for him. He didn't have a way to beat McGregor's early energy, but he couldn't stay defensive the first six rounds, so he had to up the tempo
Floyd's looked as good against southpaws, which also probably played into this, but there were a few moments early on where i legitimately though Mayweather might get laid out. The uppercut by McGregor almost made full contact, but it's little moments like that which he couldn't carry on.
After round 5, i was just hoping he'd make it to the twelfth. still, fun fight, especially having to hop on periscope, from stream to stream