[IMG]http://d.yimg.com/a/p/afp/20100417/capt.p***o_1271480050661-1-0.jpg?x=130&y=76&q=85&sig=_3C9HRs17risDUUO5yYnQw--[/IMG]AFP - Australian Mark ***ber has thrown down the gauntlet to McLaren pair Lewis Hamilton and Jenson Button after recording the fastest time in Saturday morning practice for the Formula One Grand Prix in Shanghai.
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