During the week of preparation before the US Open at Oakmont, Rory was asked to do a putting demonstration at Dick's HG. His putt on the first of two BirdieBall mats fooled him a little as there was a round shim placed near the hole. After examination he drilled the second try. The second putting mat was flat....first putt draino! Fun! If you click the link below, you can watch him on the Dick's facebook page.
The then live feed from Dick's HQ.