MLB players will be allowed to wear nickname jerseys during newly created Players Weekend later this month - ESPN
Carlos Martínez will wear 'Tsunami' on his jersey - A Hunt and Peck - Viva El Birdos
Players Weekend” to include nicknames on players' jerseys, by Rowan Kavner
Official Chicago Cubs Website
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Players Weekend” to include nicknames on players' jerseys, by Rowan Kavner
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