How long would Sugar Ray Robinson last against Marvin Hagler?

[Ray Corso]

Hagler stopped opponents with the accumulation of punches. He rarely stopped
them with a single shot. Robinson had one punch KO power in both hands.
As to competition Robinson fought other ATG throughout his career.
I think Haglers record is filled with good opponents who were respected competitors but so was Robinson and add in his 25 year career as the top draw in boxing!
For me Sugar Ray was a more complete fighter who could box and punch as Hagler could but Robinson was more dynamic!
Ray

[onetwopunch]

Robinson wasnt able to stop SRL, what makes people think he would be able to stop SRR, the best boxer in history. SRR by dec.

[TheBoxingXpert]

Robinson wasnt able to stop SRL, what makes people think he would be able to stop SRR, the best boxer in history. SRR by dec.

Why is Robinson the best boxer in history when he has such a padded record?

[CubanGuyNYC]

You're talking about a man who is generally considered the best P4P boxer that ever lived, a man who is ranked at or near the top of both the welterweight and middleweight divisions. Yet you ask what round Hagler would stop him in? Lol

I know a lot of guys here think the legends are overrated, but they're legends for a reason. You think a legion of boxing experts rank these men the way they do for decades as a goof? Lol Hagler wouldn't stop Robinson. The real question is if he could even beat Ray, which is definitely in doubt.