Ouch, Harman fans—Brian just got stung by one of golf’s rarest rules! On the 10th at the Stadium Course, Harman hit a beauty... but it was the wrong ball. That meant a two-stroke penalty and a double bogey, all thanks to a mix-up with an amateur’s ball. Even with his custom Sharpie mark, it slipped by. Has anyone seen a pro get hit by Rule 6.3c like this before? Brutal way to start the American Express! #Sports #Golf #GolfRules