The NBA has always been about bridging from one great generation of players to another. When it comes to sheer athleticism and acrobatic poetry in motion, perhaps no greater bridge existed than the one shared by Julius Erving and Michael Jordan. A quick look at the imagery from the 1970s and '80s shows the amazing individual moves Dr. J invented and perfected. At the time when Dr. J was nearing the end of his brilliant career, a young guard out of North Carolina came along with some amazing acrobatics of his own. MJ followed in the path of Dr. J with highlight-reel moves to the basket, which oftentimes were followed by thunderous dunks or gravity-defying layups. There may not have been two players who influenced the creativity and athleticism of the game of basketball than these two Naismith Memorial Hall of Fame players. Jordan and Erving have autographed this authentic Spalding basketball in silver paint pen. Their signatures are deemed authentic by virtue of Upper Deck Authenticated's Five-Step Process.