When Timmy is playing golf with his father and his father is squatting to take a look at his putting line, he say's "Same model putter that Ben Hogan used when he won the Grand Slam". This is historically incorrect because Bobby Jones is the only player to ever win the "Grand Slam". (4 major wins in one season) This happened in 1930 and Bobby Jones retired thereafter. Ben Hogan was one of the best players ever, he came close in 1953 winning 3 out of the 4 majors. He won the Masters, U.S. Open, and The British Open, this is known as the "Hogan Slam" but not the "Grand Slam".
After Dylan Baker (the father) and Mason Gamble (the son) are playing their first round of golf together and Baker realizes Gamble can play, the two walk down the fairway. The film is reversed. Both are previously shown playing right handed with gloves on their left hands, but gloves are now both on their right hands and when they stop to shake hands on a bet, they shake with their left hands.