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Akron (United States) (AFP) - Masters and US Open champion Jordan Spieth will be seeking to unseat Rory McIlroy as world number one Thursday when he tees off in the WGC-Bridgestone Invitational.
Spieth, still smarting from his agonising failure to win the British Open at St. Andrews last month, headlines the small-field, no-cut tournament which includes 48 of the top 50 players in the world.