Friend of mine just sent me this link to one of todays races: Leading horse up by several lengths takes the wrong turn and instead of crossing the finish line, keeps racing for another round (horse was already traded at -10000 at betfair). Jockey on the 2nd place horse (also already traded at -10000) thinks, his lead is large enough to celebrate and doesn't go full speed across the finish line, just to lose the race in a photo finish to the 3rd horse, which already was traded at 1000:1 
http://www.racingpost.com/media/media_centre.sd?view=rp&media_id=50014&mcTabs=mcVideo
http://www.racingpost.com/media/media_centre.sd?view=rp&media_id=50014&mcTabs=mcVideo
