China got their campaign up and running at swimming's world championships on Monday, claiming two gold medals to banish the memory of a forgettable showing at last year's competition.
Pieter Coetze is focusing on the 50 back final, where he'll try avoid a repeat of Wednesday's 100 back final in his showdown with Poland's Ksawery Masiuk.
Diogo Matos Ribeiro lowered his Portuguese record in the 100 fly to 51.61, bringing the 17-year-old within a second of Kristof Milak’s world junior record.