Full Sports Illustrated magazine, dated June 1, 1992 and signed on the cover in blue felt tip ink by Mark McGwire. The mailing label is affixed on the lower left portion, otherwise, in very good condition. Mark McGwire is nicknamed "Big Mac". He is an American former professional baseball first baseman who played 16 seasons in Major League Baseball (MLB) from 1986 to 2001 for the Oakland Athletics and the St. Louis Cardinals. He won two World Series championships, one with Oakland as a player in 1989 and one with St. Louis as a coach in 2011. One of the most prolific home run hitters in baseball history, McGwire hit 583 home runs during his career, which ranked 5th-most in MLB history at the time of his retirement and currently ranks 11th.Comes with a full Letter of Authenticity from Todd Mueller Authentics.