Could current Mayweather beat Spence?

No. His last real fight was Berto. He is Berto-level. Spence is too much for him.

No Spence beat him up in sparring years ago, Floyd kicked him out of the gym. Floyd was great in all, but he cherrypicked almost the last 10 years he fought, had he fought the best available fighters, he would have lost. He was beaten by Maidana, a guy who Devon Alexander won 12-0 against. Quit worshipping p u s s y boy Floyd, he wasn't even a fun fighter to watch, I fell asleep during the Manny fight.

No. Too many years of inactivity and too old to beat a prime bigger and stronger champion.

Yes he can.. floyd is a prodigy and special talents like him dont get affected much by layoffs. Spence is too basic and brings nothing new that Floyd hasnt seen before.

Yes .

Probably not

No and he would not challenge Spence now. Prime Mayweather probably could beat Spence but he is at least 13 years past his prime.