Who that Monzon defended against could beat prime MW Robinson? Since Ray tried to close the show more quickly than Monzon (grinding style), would Robinson KO or TKO most of Monzon challengers pretty quickly?
Briscoe. SRR liked to slug it out with MWs and he struggled badly with all the good ones. Luckily for him, none were big punchers. He slugs with a prime Briscoe and he's in trouble. He could get hurt badly here.
First, let me say that SRR was the greatest fighter p4p ever. With that out of the way, I believe that in the middleweight class, he'd have a very difficult time with Benvenuti and Griffith both technically and stylistically...and Briscoe & Valdez would be way too strong and dangerous for Ray...especially Valdez, who was a powerful, cat quick deadly puncher.
