Every young and not-so-young kid dreams of hitting the winning home run in the 9th inning of the 7th game of the World Series But it only happened once in the Major Leagues # 9 hit the series winning home run; # 21 is a Pirate legend Jersey Number This authentic jersey will have the number 9 on it. This is the number worn by Bill Mazeroski with the 1960 Pittsburgh Pirates. Please note: the player's name is not on the jersey. Quality Construction Authentic Materials. Accurate detailing. Exceptional workmanship. These are the hallmarks of Mitchell & Ness's shirts, jackets, sweaters and felt pennants. The wool flannel shirts are constructed of a lightweight wool blend predominant in the late 60's. The 70's and 80's knit jerseys are made of fabrics identical to the originals. The jersey number shown is normally in stock and ready to ship immediately.