A true giant of the game is no more. Adrian Wojnarowski of Yahoo! is reporting that Yao Ming has officially filed retirement papers with the NBA league office. Yao has battled a bevy of injuries to his body throughout his career. During the past season, Yao was only able to play 5 games before undergoing additional surgery. His career will be celebrated for its' impact off the basketball court, opening up the game of basketball to the Asian market.