Black Diamond Casino

The Knockout Asylum (previously known as Diamond Wrestling Arena) is a multipurpose indoor arena used primarily for professional wrestling, boxing, mixed martial arts, and concert events. Located in Yonkers, New York, the Knockout Asylum was named after TKO Wrestling, with the full name of the company being Total Knockout Wrestling.

It was previously known as the Diamond Wrestling Arena when it was home to Professional Championship Wrestling from 2017 to 2019.