Troy Tulowitzki announces retirement after 13 seasons in MLB: 'It
Tulowitzki joins Texas staff hours after retirement – The Daily Texan
Former Colorado Rockies star Troy Tulowitzki retires, Sports
Troy Tulowitzki retires after leg injuries – The Durango Herald
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5-time All-Star Troy Tulowitzki retires after leg injuries
Troy Tulowitzki retires: Former Rockies all-star shortstop steps away after 13 MLB seasons – The Denver Post
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Troy Tulowitzki retires: Former Rockies all-star shortstop steps away after 13 MLB seasons – The Denver Post
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Troy Tulowitzki announces his retirement - Beyond the Box Score