Do you think you know what Colin Kaepernick looked like when he was little? What about Dirk Nowitzki? Or, better yet, what about Blake Griffin? All three are featured on Bleacher Report's new list called "Guess Who: Our Favorite Athletes as Children" over here. So if you think you're up for the challenge of identifying little kids who grew up to be famous athletes, go put your skills to the test.

[via Bleacher Report]