BIG MISTAKE TMZSports.com
In the wake of Tua Tagovailoa's recent string of head injuries ... Warren Moon is revealing he, too, struggled with concussions during his NFL career -- but, he tells TMZ Sports he's not feeling any real effects from them decades later.
The 67-year-old Hall of Famer played for multiple franchises from 1984 to 2000 -- and he says during that timeframe, he was diagnosed with a concussion on six separate occasions.
Moon, though, told us he still considers himself very healthy .