<prompt> Qedela umusho olandelayo:  <response>: i-100 m butterfly yamadoda kuma-Olympic asehlobo ka-2012 eLondon, ngokuvala isikhathi sokungena se-FINA B-standard esingu-52.45 imizuzwana. Uphonsele inselelo abanye ababhukudi abayisikhombisa emdlalweni wesithathu, kuhlanganise noPeter Mankoč waseSlovenia owine ama-Olympic amahlandla amahlanu, uClement Lefert waseFrance ongumpetha we-freestyle relay, kanye noRyan Pini wasePapua New Guinea owayengumdlali wama-Olympic. UChang wagijima waya endaweni yesihlanu ngesigamu sesikhulu sesekhondi 0.01 ngemuva kukaPini ngesikhathi semizuzwana engu-52.69. UChang wehlulekile ukudlulela kuma-semifinals, njengoba wabeka indawo engamashumi amabili nesithupha jikelele kuma-heats okuqala. 