Johan Kok shot a 5-under 67 on Sunday to match The Dunes Golf & Beach Club competitive record and share the first-round lead in the PGA Professional National Championship.
Kok, the 34-year-old former University of South Carolina player from South Africa, is the PGA general manager at Temple Hills Country Club in Brentwood, Tennessee.
The top 20 will get spots in the PGA Championship at Valhalla in August in Louisville, Kentucky.
Dave McNabb, the 48-year-old PGA head professional at Applebrook Golf Club in Malvern, Pennsylvania, opened with a 67 at Grande Dunes Resort Club.
Jamie Broce of Ottawa Hills, Ohio, and Ryan Helminen of Menasha, Wisconsin, shot 68. Broce, the men's golf coach at the University of Toledo, and Helminen, a PGA teaching professional at Ridgeway Country Club in Neenah, Wisconsin, played at The Dunes.