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Yahoo: Ex-NFL players urge Tua Tagovailoa to shut down season amid latest concussion scare : r/nfl
Former NFL Players Show Why Andrew Luck's Retirement Isn't a Surprise
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Andrew Luck retired from Colts 3 years ago, and Twitter reacts
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The Colts pulled the plug on Matt Ryan — and potentially on their season - The Boston Globe
3 Stories: Andrew Luck's Retirement, Concussion Settlement Update, Carli Lloyd