BRISTOL, Tenn. and COLLEGEVILLE, Pa., June 14 /PRNewswire/ -- Legendary golfer Jack Nicklaus will hit the ceremonial first tee shot to open the 3rd Annual Jack Nicklaus Heart & Stroke Challenge. The focus of the Challenge is to raise awareness about the increasing risk of cardiovascular events such as heart attack and stroke among people age 55 and older. Cardiovascular disease is the nation’s number one killer. Cardiovascular disease affects more than 70 million Americans, many of whom are over the age of 55.