Baby Gronk is erasing all doubt ... the football prodigy tells TMZ Sports he is, indeed, the new Drip King after meeting up with Livvy Dunne -- and he added that if he ever sees Baby Diggs on a field, he's winning that matchup no doubt!!
If you're unfamiliar with what any of that means ... let's a play a little catchup.
Baby Gronk gained fame several years ago for his prowess on youth football fields ... but, the 10-year-old's star absolutely skyrocketed earlier this year -- after Dunne ran into him on LSU's campus.