Do you realize how important it is to constantly refocus and notice every detail for even 2-3 hours in smaller tourneys or games? Now imagine 10+ hours a day for 3-6 days in a row. Now do it when your 50+ years old. He even says it himself it's all about paying attention and having incredible stamina/perception. He is beating all these young, agressive pups time and time again with a major disadvantage of being older.