Breakthrough T1D hosts the Cliff Harris Golf Tournament on Monday, June 8, 2026, at 8:00 a.m. at Stonebriar Country Club. The annual tournament, led by Pro Football Hall of Famer Cliff Harris, raises funds to accelerate breakthroughs in type 1 diabetes research. Harris, a Dallas Cowboys Ring of Honor member who has lived with T1D and lost his father to the disease, brings together celebrity athletes and supporters for a memorable day on the course. Sponsorships start at $2,000 and foursome sponsorships begin at $7,500.