In 2004, the Port Adelaide Football Club stood at the summit of the AFL world — and standing at the top of the club was Warren Tredrea. "It doesn't seem too real out here," he told a TV interviewer following the final siren on the last Saturday in September. The venue was the MCG, the occasion was the grand final, and Tredrea — who was captain that day — was basking in the glow of victory. The Power had beaten Brisbane by 40 points to claim what was its first, and remains its only, AFL premiership. That September triumph 21...