AsforMcKelvin,CheapAirMax90FreeShipping,coachDougMarronesaidit'stooearlytodeterminehowseriousthehamstringinjuryisuntiltheplayertestsitinpracticethisweek.McKelvin'sinjurywouldbeanotherblowtotheBills'alreadythindefensivesecondary.StartingcornerbackStephonGilmoreisexpectedtomissatleasttwomoreweekswithabrokenwrist,backupRonBrooksisoutwithabrokenfoot,andProBowlsafetyJairusByrdhasmissedthefirstthreegameswithfootinjuries.