Sport Terence Crawford announces surprise retirement at age 38: 'Nothing else left to prove' Yahoo News - Jack Baer
Sport Why did Terence Crawford retire? Explaining boxing legend's decision to leave sport after Canelo Alvarez fight Yahoo News
Sport Terence Crawford retires from boxing: ‘Walking away as a great with nothing else left to prove’ Yahoo News
Sport Terence Crawford, boxing's top pound-for-pound fighter, retires on top with 42-0 record Yahoo News - The Associated Press
Sport Terence Crawford announces sudden retirement from boxing: ‘Nothing left to prove’ The Independent - Alex Pattle
