Trent Dilfer thinks whoever drafts Tua Tagovailoa in two weeks is getting a future NFL legend ... saying the Alabama quarterback has straight-up Hall of Fame potential.
"He throws better than Aaron Rodgers and Dan Marino," Dilfer told The Washington Post this week.
Of course, the ex-NFL QB is a bit biased ... he's been a key figure in training Tua to get ready for the draft -- but he claims Tagovailoa is as good a prospect as he's ever seen nonetheless.
"He throws the football better than anyone throws the football," Dilfer said .