No, your eyes aren't playing tricks on you.
As part of its ever evolving tribute to Jackie Robinson, all Major League Baseball players today will wear the former Brooklyn Dodgers' number 42 on their backs.
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It's a far better tribute in the past when some players were allowed to wear the number if they specially requested it. Some teams opted to have all of their players wear the number while on others none did.
Major League Baseball retired Robinson's number in 1997, the 50th anniversary of his breaking of the color barrier. Only players who already had the number before the retirement -- including the Yankees Mariano Rivera -- are allowed to continue to wear the number on a daily basis.