Major League Baseball (MLB) is the most historic professional sports league in the United States and consists of 30 member clubs in the U.S. and Canada, representing the highest level of professional baseball. Major League Baseball is the best-attended sport in North America, and since 2004, MLB has enjoyed its best-attended seasons in the history of the game, with each regular season eclipsing the 73 million mark. Now led by Commissioner Robert D. Manfred, Jr., MLB currently features record levels of labor peace, competitive balance and industry revenues, as well as the most comprehensive drug-testing program in American professional sports. MLB remains committed to making an impact in the communities of the U.S., Canada and throughout the world, perpetuating the sport's larger role in society and permeating every facet of baseball's business, marketing and community relations endeavors. With the continued success of MLB Advanced Media and MLB Network, MLB continues to find innovative ways for its fans to enjoy America's National Pastime and a truly global game.