McCann, who claimed a bronze medal in the World B Championship road race in Switzerland during the summer, finished 52 seconds ahead of Irish time trial champion David O'Loughlin in the 40K event.

BBC: SPORT | Other Sport | Cycling | McCann guarantees world place

Cummings also goes in the men's time trial, which is wide open following the withdrawal of reigning champion and Olympic gold medallist Fabian Cancellara.

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The trial gripped many South Africans, who were deeply shocked to hear the allegations directed against this former champion of the anti-apartheid struggle.

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China's Jiang Yonghua, who had set the previous world best of 34.00 seconds, took the silver medal in 34.11 while Natallia Tsylinskaya of Belarus, three times a time trial world champion, won bronze in 34.16.

CNN: Time trial wins for Hoy and Meares