Parker is a sheriff's lieutenant from Bonham, Texas. He was also a member of the United States Marine Corps for 21 years. During that time, he was captain of the Marine Corps Shooting Team, with which he won gold in both the Eastern and Pacific D divisions. In preparation for his appearance in Season Two of Top Shot, he recreated every challenge from Season One in his backyard. During his travels, he has also handled spears, blowguns, bolos, and other exotic weapons.
According to Behind the Bullet, Daryl had just published his first novel. He has also opened a Top Shot-style shooting range in North Texas called Marksman's Challenge. All levels of shooters get to come out and have their own Top Shot experience.
Daryl was a guest shooter on the History Channel series Top Guns in March 2012.