Gold Medalpublished at 19:53 British Summer Time 2 August 2014
Jamaica still lead as Anastasia Le Roy hands over to anchor Stephanie McPherson. But what's this? Nigeria's Folashade Abugan goes round the bend like a train, briefly taking the lead down the back straight before riunning out of steam.
McPherson powers over the line to help Jamaica set a new Games record of 3.23.82. Nigeria take silver with England claiming a well-earned bronze as Anyika Onoura - a 200m specialist - shows her stamina.