Billy Mayfair shot an 8-under 62,his lowest round on the Champions Tour, on Friday at Canyon Meadows to take a one-stroke lead over Canadian star Mike Weir after the first round of the PGA Tour Champions' Shaw Charity Classic. Winless on the 50-and-over tour after winning five times on the PGA Tour, the 55-year-old, Mayfair, had four straight birdies in …
