The relays have not been kind to Team Jamaica as they were DNF in the 4x4 final tonight. #London2017 #WorldChampionships #RoadtoLondon #TrackChampionships #TrackandField #TrackNation #Sports #SportsPhotography #TrackNation #FloTrack #RunnerSpace #Dyestat #Athletics #IAAFWorlds #Canon400 #canon1dxmarkii