Scottie Scheffler and Tom Kim celebrated birthdays at the US Open. Sunday represented the final round of the US Open in Southampton, New York. It was also Scottie Scheffler’s birthday. Fans in attendance took a moment to recognize that fact ahead of his first tee shot. A “Happy Birthday” singalong broke out at the first tee box. The crowd had an opportunity to do the same for a fellow PGA Tour competitor. Instead, there was silence. Tom Kim teed…