How Often Is a Perfect Game?

The First Known Use of the Term Perfect Game Was in 1908; Its Current Definition Was Formalized in 1991. in Major League Baseball (Mlb), the Feat Has Been Achieved 23 Times – 21 Times Since the Modern Era Began in 1901, Most Recently by Félix Hernández of the Seattle Mariners on August 15, 2012. the First Known Use of the Term Perfect Game Was in 1908; Its Current Definition Was Formalized in 1991. in Major League Baseballmajor League Baseballin Major League Baseball, the General Manager (Gm) of a Team Typically Controls Player Transactions and Bears the Primary Responsibility on Behalf of the Ballclub During Contract Discussions with Players. › Wiki › General_Manager_(Baseball) (Mlb), the Feat Has Been Achieved 23 Times – 21 Times Since the Modern Era Began in 1901, Most Recently by Félix Hernández of the Seattle Mariners on August 15, 2012.