It's hot as hell out and football players are already sick of training camp ... so, no surprise Giants star rookie Malik Nabers and Lions safety Kerby Joseph came to blows at practice on Tuesday!
A fan watching the joint NYG and Lions practice at the Quest Diagnostics Training Center in New Jersey recorded the altercation ... and the fists were flying!
The footage shows 21-year-old Nabers -- the 6th overall pick in the 2024 NFL Draft -- attempting to catch a pass that was broken up by DB Terrion Arnold.