Explanation for each:

Hearns vs Mayweather: Hearns was unlike anything Floyd fought. Good boxing skill, very long, great jab and amazing accuracy and power on the right, the only shot Floyd can really use consistently on him is the jab but most of his shots will fall short https://twitter.com/lightning_jl/status/1312395948203614212

Consequently I think floyd will be too circumspect to attack and Hearns would win on PTS

Trinidad: Trinidad has a punchers chance but Hearns had a bigger one due to his length, I think Hearns will be the one pressing forward with Tito moving, but Tito’s upright stance will get him caught down the middle

Hopkins: I think Hearns would take a close fight and I think he would keep Hopkins honest and less willing to work inside, but I think Hopkins jab will be effective and when he does get in it will be tough for Hearns, but Hearns IMO wins a tough fight on Pts

RJJ: I got Roy taking Hearns head off Mortal Kombat Style in 5.