Dtail
Give me a museum and I'll fill it. (Picasso) Give me a forum ...
BoxRec's 'Marvin Hagler' site: https://boxrec.com/en/proboxer/8684
Be sure to click on any of the links in his career fight record page that lead to many thousands of other links--from the date of each bout [click on any date of any bout to see what other fights occurred that date], his opponents (and their links), his wiki profile, etc...and, if you're a boxing fan, you'll be "lost in the sauce" for hours.
For example, here's his BoxRec wiki page (the link to which is one of the many links atop his 'career record' page above... and it leads to many other BoxRec links about boxing history):
https://boxrec.com/media/index.php/Marvin_Hagler
Interesting. Thanks.