I did this one by hand to work on my photo matching skills. The original photo was a Navy photo (so public domain anyway) so I could have just synthesized it directly, but I just felt like this cliparty style is fun too.
This is a completely free image Two Guys Play Basketball that you can download, post, and use for any purpose.
Image License: CC0 No Rights Reserved
You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission, and at no cost. This image is completely free.