Touching moment on the golf course this weekend ... a fan with Down Syndrome yelled during a critical putt, but the PGA Tour Latin America golfer who missed the shot quickly forgave the guy with a hug and autographs.
The incredible scene all went down on Sunday at the Visa Open de Argentina in Buenos Aires ... where Brandon Matthews needed to sink an 8-footer in a playoff hole to keep his championship hopes alive.
But, while the 25-year-old was in the middle of his backswing ... a fan yelled out, causing Brandon to shank the putt -- and you can see on video, Matthews was initially pissed.