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[b]Jack Houghton previews the day's Athletics schedule. Could there be a world record in store on the track?[/b] [b]Men's 200m:[/b] It's hard to see why Usain Bolt (1.2) won't confirm 100m-form with Yohan Blake (6.2), but the price is unattractive. I think Christophe Lemaitre (120.0) - whose win at the Crystal Palace Grand Prix in July was the best piece of form shown by any non-Jamaican this season - has a chance at the bronze, but again, the odds are doing nothing to excite me. [b]Men's 800m:[/b] David Rudisha (1.09) is phenomenal: he broke a long-standing world record in 2010 at the age of 21, and won the World Championships in Daegu last year despite having struggled with injuries earlier in the season. This season he has been on fire, remaining unbeaten and setting the four...