When they both played for the Oakland A's, Mark McGwire and Jose Canseco were known as the "Bash Brothers", helping to lead the A's to the 1989 World Series title. This 34", 32 oz Rawlings Adirondack Model 256B game used bat is signed by both McGwire and Canseco. Shows use with ball and seam marks on the barrel with "33" in marker on the knob. Canseco has added "89 Game" to this "Bash Brothers" bat, meaning it was used during their championship season.