2019 USGA Rule Changes http://www.usga.org/content/usga/home-page/rules-hub/rules-modernization/major-changes/major-changes.html?utm_source=eNews&utm_campaign=82f2f86b2a-SCGA_News_3_7_2017_COPY_01&utm_medium=email&utm_term=0_b72c16451c-82f2f86b2a-105466853
