O'Connell led by two spots on No. 16, but a bogey from O'Connell and a birdie from Risner created a tie at the top. Both players pared out to force the playoff.
Risner shot 71-69-66-68 over the four days to finish at 6 under.
Risner played a consistent Round One, shooting 1 over 71 to start the tournament on Wednesday. During Round 2, Risner added more birdies to his scorecard, registering a 1 under 69 and making the cut, going into the second half of the tournament at even par.
Risner came in with five birdies after Round 3, shooting an impressive 5 under 66 for the day. This would earn him a spot in the final group on Saturday, playing with O'Connell and Jack Wieler of Waxhaw, N.C., the leader after round one.
As the final group came down 18, Risner and O'Connell were deadlocked at 6-under, and similar pars for both on the last hole set things up for a playoff. The match would end on the second playoff hole when Risner dropped a seven-foot birdie to claim the prestigious championship.
"Staying in the moment. Remember not to get ahead of myself and start thinking about what I need to do, and just try to hit the target I was hitting at," Risner said when discussing his biggest challenge on the course during the Final Round.
Ryan O'Neil of Waxhaw, N.C. finished in third place at 4 under.
