tony parker
Joe Williams
Not every NBA player can dunk. Some players may not have the physical ability or skill to perform a dunk.
You have to have a created player with the 360-between the legs specialty dunk package and then you go to practice and run towards the hoop and then point the analog stick down left diagnal.
First you need a player that has a high dunk rating, like Jordan. You can do a dunk in a game and possibly do a craddle dunk. Im not quite sure if there is a signature dunk that allows you to craddle dunk but you can try.
You have to upgrade your dunk attribute and edit your player to select the dunk package you want.
you have to go play 100 games.
Players who are currently in the nba that have done it are: Kobe Bryant, Lebron James, Vince Carter, Derrick Williams(did a 360 dunk in the slam dunk contest), Blake Griffin, Jason Richardson, Amar'e Stoudemire(not 100% sure if he has), Rajon Rondo, JR smith.
There are plenty of good dunkers who haven't won the slam dunk contest.
Spud Webb
Nate Robinson
rajon rondick
The first ever dunk contest was held in 1976 in Denver and the first NBA dunk contest was held in Denver in 1984.