Which player was nicknamed "Mad Dog"?

What uniform number did José Canseco wear with the Athletics? What position did Greg Maddux primarily play? Greg Maddux is best known for playing with which MLB team? What uniform number did Greg Maddux wear with the Braves? What position did John Smoltz primarily play? John Smoltz is best known for playing with which MLB team? What uniform number did John Smoltz wear with the Braves? What position did Tom Glavine primarily play?