Cam Young’s final round of the Cadillac Championship got off to an interesting start.  Standing over his approach on Trump Doral’s par-4 2nd, leading by five, Young thought he saw his ball move forward during his set-up. He wasn’t entirely sure, but, following golf’s rules and etiquette, called a penalty on himself and was docked a stroke .  It didn’t matter, though. He knocked his shot to 13 feet and made par.  That was a microcosm of how Young’s day—and week—went. Nothing could deter him. He wouldn’t be tracked down. And that’s why he did something that hadn’t been done in half a century.  Young, finishing at 19 under par, went wire-to-wire at the Cadillac Championship for a six-stroke triumph over Scottie Scheffler. It’s the largest margin of victory at Doral since Hubert Green topped Jack Nicklaus and Mark Hayes by six in 1976. MORE: Final payouts from the Cadillac Championship “The self-belief just continues to build,” Young said on the 18th green after a final-round 68.…