US Bookmakers

Gamebookers  
www.gamebookers.co.uk

Gamebookers offer 'fixed odds' & 'person to person' sports, racing, financial market and special event betting. They are one of the world's leading online bookmakers and also provide a wide range of information and some unique features such as their free sms result service.
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Pinnacle Sports  
www.pinnaclesports.com

Pinnacle Sports is an international bookmaker, based from the Netherlands Antilles. They're popular with professional gamblers because of their highly competitive odds (and low margins). They cover the major international sporting events, though their books more diverse for US sports and American horse racing.
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Race Book  
www.racebook.com

RaceBook.com, as the name suggests, lets you bet on all your favorite horse and greyhound racing events. RaceBook offer full track odds on win, place and show, as well as trifecta, quinella, exacta,and other exotics at track odds up to 300 to 1.
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