Up For Auction: '90s vintage Ping golf hat. By Derek Evers. November 25, 2013 By Alex Holmes. eBay, the interweb's premier market place, is an absolute gold mine for golf gear.

Ping Golf, Hunter Mahan's equipment benefactor, asked his caddie John Wood if he'd like anything included on the back of his hats, be it his initials or maybe a logo from an endorsement. "I thought ...