Today, at the invitation of MLB Commissioner Bud Selig all Cardinals (and every Astro) will wear the Number 42 on their jerseys to honor the accomplishment and memory of Jackie Robinson. Robinson, a member of Baseball's Hall of Fame, became the first African American to play in the majors when he debuted with the Brooklyn Dodgers on April 15, 1947. His Number 42 was retired throughout baseball in 1997.
The number has some extra significance for Cardinals fans. Number 42 was also retired by the Cardinals in 2006 to honor former pitcher (and Hall of Famer) Bruce Sutter.
The last Cardinal to wear Number 42? Fans in the office think it was third baseman Jose Oliva in 1995. Is that correct?