Demsey back on PGA Tour via Q-school 64

After a 10-year absence and two operations to remove a brain tumor the size of a golf ball, Todd Demsey finally made it back to the PGA Tour on Monday with perhaps the most significant round of his career. Demsey, a former NCAA champion and amateur teammate of Tiger Woods and Phil Mickelson, closed with an 8-under 64 in the sixth and final round of Q-school to earn one of 26 full-exempt cards next…