He is a line judge and wears the uniform number 18.
He wore uniform number 18 for most of his career.
Quick wore uniform number 15 for most of his career.
Not many baseball players change their uniform numbers during the season.
He wore uniform number 4 beginning in the late 1980s.
He wore uniform number 18 for the A's this time.
The player's name on the back, along with the uniform number, is in blue.
The club started to use uniform numbers during the 1937 season.
He wore uniform number 24 for the most of his career.
Due to his name, he was given uniform number 6.