Zach Johnson wins British Open in 4-hole playoff over Oosthuizen and LeishmanST. ANDREWS, Scotland (AP) Zach Johnson wins British Open in 4-hole playoff over Oosthuizen and Leishman.SI Staff|Share on FacebookShare on XAdd us as a preferred sourceAdd us as a preferred source on GoogleFollowLoading recommendations... Please wait while we load personalized content recommendationsPublished Jul 20, 2015 | Modified Jul 20, 2015SI STAFFShare on FacebookShare on X