Nothing good happens for sports stars after hours outside of nightclubs. I understand that in your 20's, and even 30's, having fun in clubs is part of what happens. But when you are a star, outside those clubs, you have a target on your back. It's best to have personal security and if you are making millions every year, a good security person is a good investment.
That said, Kristaps and his friend were victims and it's not their fault they were attacked. I just hope Kristaps has learned something and decides to avoid nightclubs, only go to nightclubs with a reputation of having great security you can use, only go to nightclubs that cater to celebrities or hire a body guard.