<prompt> Bhala okuqhubekayo kwalesi sigaba - Emidlalweni yama-Olympic asehlobo ka-2012 eLondon, uJoyce wabeka isikhathi esingamasekhondi angu-25.28 kuHeat 8 we-50-meter freestyle  <response>: , okumphoqa ukuba abhekane nabanye abagijimi ababili ngokubhukuda ukuze athole indawo yeshumi nesithupha neyokugcina kuma-semi-final amamitha angu-50. Eshukunyiswa izilaleli zasekhaya, umncintiswano waseBrithani u-Amy Smith wanqoba ukubhukuda ngezikhathi ezingama-24.82, waqeda ukubamba iqhaza kukaJoyce kulo mcimbi. 