McIlroy opens with 71, 4 shots behind KarlssonVIRGINIA WATER, England (AP) Rory McIlroy opened the defense of his BMW PGA Championship title on Thursday with a 1-under 71 that left him four strokes behindSI 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 May 21, 2015 | Modified May 21, 2015SI STAFFShare on FacebookShare on X