Steve Hummer Las Vegas August 2, 2006 IT IS going on 10.30pm in the city without clocks, and after nearly 12 hours of poker, Paul Azinger is a deep-down, someone's-just-starched-my-hamstrings tired. His eyes are glassier than a mounted marlin's. "It's like playing 36 holes," said the 46-year-old winner of 12 PGA Tour events, including the 1993 US PGA Championship. "My lower back is sore. My legs ache. I've got a little fatigue now." If the trials that come with sitting in one place for long periods of time qualified as a sporting challenge, this would be an Olympic event. That...