We interrupt the coverage of the marathon trials...

...to pass along a link from the IAAF on our own Brad Walker:"For a man normally prepared to meet risk head-on – he has a passion for extreme sports, likes fast cars, and won a World Pole Vault title despite suffering concussion from a nasty fall in warm-up – Brad Walker is contrastingly cautious in one respect. Ask him if he is the athlete to extend the United States’ proud Olympic tradition in