Cache folder in Nba 2K12 ? How it's work

What kind of files are stored in this folder ? Can I delete them all ?

Yesterday, this folder contains a ~350 MB of data, today 1.43 GB o.O What is this and why this grows so fast on my disk ? ;/

the game uses it to load faster, save replays of all the baskets in a game (for gametrack at the end) and other things. If you want to delete you can, but it will come back.

Thanks for the answer, now i get it.