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"&lt;p&gt;&lt;/p&gt;&lt;p&gt;British oddsmaker William Hill opened action on a Floyd Mayweather-Manny Pacquiao megafight on Sunday morning, even though the highly anticipated showdown between the world's two best pound-for-pound boxers hasn't been made -- and may never be.&lt;/p&gt;&lt;p&gt;Hills installed Mayweather as an 8/11 favorite and Manny Pacquiao as a slight 11/10 underdog\u00A0just hours after Mayweather's knockout of Victor Ortiz at the MGM Grand Garden Arena in Las Vegas.&lt;/p&gt;&lt;p&gt;\"Mayweather proved he is still ruthless in pursuit of victory and the public demand for a showdown with Manny will only increase as a result,\" William Hill spokesman Graham Sharpe said.&lt;/p&gt;&lt;p&gt;Mayweather-Pacquaio would be the richest prizefight in history, but a history of bad blood between Mayweather and Top Rank CEO Bob Arum -- Floyd's former and Pacquiao's current promoter -- have left both sides at an impasse.&lt;/p&gt;&lt;p&gt;Pacquiao is scheduled to fight Juan Manuel Marquez on Nov. 12 in Las Vegas. If he wins and a fight with Mayweather can't be made for May, Pacquiao could fight undefeated light welterweight champion Timothy Bradley instead.&lt;/p&gt;&lt;p&gt;While on a worldwide press tour to promote the Marquez fight, Pacquiao has hinted he may retire in 2013 when he plans to run for governor, with an eye on the vice presidential seat in the 2016 elections.&lt;/p&gt;&lt;p&gt;&lt;/p&gt;&lt;p&gt;&lt;strong&gt;&lt;em&gt;-- Bryan Armen Graham&lt;/p&gt;&lt;p&gt;&lt;/em&gt;&lt;/strong&gt;&lt;/p&gt;&lt;p&gt;&lt;/p&gt;&lt;p&gt;&lt;/p&gt;"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.si.com/boxing/counter-punch/2011/09/18/early-odds-for-mayweather-pacquiao-posted>