Jim 'Bones' Mackay returns to career as caddie, links up with Justin Thomas in a full-time role | CBS Sports Headlines Jim 'Bones' Mackay returns to career as caddie, links up with Justin Thomas in a full-time role Mackay famously caddied for Phil Mickelson for 25 years before leaving for … Continue reading Jim 'Bones' Mackay returns to career as caddie, links up with Justin Thomas in a full-time role