Troy Tulowitzki - Wikipedia
LB In MLB: Troy Tulowitzki Announces His Retirement –
Troy Tulowitzki announces retirement after 13 seasons in MLB: 'It has been an absolute honor'
Troy Tulowitzki retires: Former Rockies all-star shortstop steps away after 13 MLB seasons – The Denver Post
Why Yankees' Troy Tulowitzki opted for retirement at 34 instead of return from calf injury
Troy Tulowitzki announces retirement after 13 seasons
Baseball wasn't as enjoyable as it used to be for Troy Tulowitzki as calf injury leads to his retirement - Newsday
Troy Tulowitzki Announces Retirement - MLB Trade Rumors
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Rockies send Troy Tulowitzki to Blue Jays for Jose Reyes - The Boston Globe