<prompt> Bhala ukuqhubeka kwalesi sigaba - UFelix waphinde waya emjahweni ngo-Agasti 10, 2012, njengengxenye ye-relay yamamitha ayi-4 × 100 yabesifazane  <response>: uTianna Madison, uBianca Knight, noCarmelita Jeter. Laba abane banqoba ngesikhathi esingamasekhondi angu-40.82, bephule irekhodi lomhlaba elalisele isikhathi eside elingamasekhondi angu-41.37, elalibekwe yiMpumalanga Jalimane ngo-October 1985. Ngobusuku bokugcina bezemidlalo, ngo-Agasti 11, 2012, uFelix wagijima umlenze wamasekhondi angu-48.2 eqenjini labesifazane base-US 4 × 400 metres relay noDeeDee Trotter, Francena McCorory, noSanya Richards-Ross, benqoba ngesikhathi esingu-3: 16.87, isikhathi sesithathu esisheshayo emlandweni wama-Olimpiki ngemuva kweSoviet Union kanye ne-United States kuma-Olimpiki asehlobo ka-1988, nesikhathi sesihlanu esisheshayo jikelele, kuze kube yileso sikhathi. 