To do that, hold R2 if you’re on PS4, RT on Xbox, or ZR on Switch. To score a dunk, you first need to be sprinting towards the basket. That’s because it’s quite easy to mess them up. While you might want to do a dunk at all times in NBA 2K21, it’s best to keep them for when the risk is low. So that you can show off as you score points, here’s everything you need to know about how to dunk the ball in NBA 2K21. The highlight of every basketball montage is dunks and they’re a huge part of 2K‘s game. While it’s sometimes best to stick to the simple things in basketball, it’s sometimes fun to try the spectacular.