Dufner withdraws with neck injuryLOUISVILLE, Ky. (AP) Defending champion Jason Dufner, suffering from a neck injury and struggling just to swing a golf club, pulled out of the PGA ChampionshipSI Staff|Share on FacebookShare on XAdd us as a preferred sourceDufner withdraws with neck injuryAdd us as a preferred source on GoogleFollowLoading recommendations... Please wait while we load personalized content recommendationsPublished Aug 7, 2014 | Modified Aug 7, 2014SI STAFFShare on FacebookShare on X