Alex Rodriguez wore number 3 on the Seattle Mariners. He also wore the number 3 when he played for the Texas Rangers.
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The first season of the Seattle Mariners was 1977.
Go to the Mariners' web site for the teams roster...try MLB.com and click on Seattle Mariners.
The Mariners are owned by Nintendo of America
Mariner Moose (Seattle)
As of 2010, never.