Brian Roberts, Kosuke Fukadome, Emilio Bonifocio, and Louis Castillo
The most important is Ozzie Smith but obviously he is retired!
Nobody baseball retired it.
Mark Teixeira
Pablo Sandoval
Alex Rodriguez
Players that wear number 12 are players like Alfonso Soriano of the Chicago Cubs.
All of them.
all of them do
New Era 59fifty
BARRY BONDS
One April 15, all players, coaches, and umpires of the MLB wear the jersey number 42 in honor of Jackie Robinson, the first African American MLB player, who played his first MLB game on April 15, 1947.
Sixty percent
Depends how on the weather, I suppose.