in a nutshell: betfair is a gambling company. davydenko (#4) was playing #87 guy. tons of action on the book before the match on #87. after #4 won the first set, tons MORE action went on #87 - basically, as if #4 had lost the first set. he then lost the second set, and quit midway in the third citing a foot injury. betfair was on the case WHILE THE MATCH WAS GOING ON, and was contacting people about it in the second set. http://www.latimes.com/sports/la-sp-betfair12aug12,0,5471633.story?coll=la-home-sports