Victoria Pendleton safely advanced to Thursday evening's best-of-three quarter-finals in the women's sprint.
The Olympic champion qualified fifth fastest as Australia's Anna Meares, the defending world champion, set a world record for the flying start over 200 metres of 10.782 seconds. Pendleton clocked 11.076secs.
Meares then beat Colombia's Juliana Gaviria, the 24th and final qualifier, comfortably in her first head-to-head bout to progress and then eased past Cuba's Lisandra Guerra Rodriguez.
Pendleton met Yvonne Hijgenaar of Holland in the first knockout round and edged through by a wheel length.
Pendleton then led from the front against Junhong Lin to progress at the first time of asking, with the Chinese rider falling into the repechage.
The Briton's team-mate Jess Varnish, eighth quickest in qualifying in 11.090, was eliminated by Junhong in the first round.