Douglas Cartelli. Has been a mainstay in Connecticut his entire life. From early days at Xavier High School to giving back to Connecticut through multiple charities and events. Douglas Cartelli. A Pro Boxer who brought Boxing and MMA (Mixed Martial Arts) to entire NEW level with his premiere fitness center. The Lions Den ( Not affiliated with Ken Shamrocks Lions Den) Douglas Cartelli. Who today is working to bring Connecticut a new level of entertainment and excitement with the NEW venue and NEW staff of professionals from all of the United States. Douglas Cartelli attended Southern Conn University. Douglas Cartelli is certified from Fight Promoters University. With Douglas Cartelli Promotions inc © you can count on having a memorable time and 5 Star treatment. From booking the venue for a private event to attending one our premiere events. At a Cartelli Promotions inc© event you can be sure that "Great Things will Happen" Douglas Cartelli Promoters license in the state of CT for MMA (Mixed Martial Arts) and Pro Boxing.