Ricky Williams would almost certainly have a bust in Canton today if the NFL had eased its weed policies during the running back's heyday -- at least, that's according to Calvin Johnson.
The Lions legend told TMZ Sports he not only thinks Ricky was just that good ... but he truly believes the benefits that marijuana provided the tailback could've helped Williams extend his career too.
"Ricky would probably be a first-ballot Hall of Famer if he didn't have the issues with that," Johnson told us.
And, get this, the 38-year-old said his own career "possibly" would've lasted longer if the league had adjusted its ganja laws during his playing days as well.