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Chicago (AFP) - Rory McIlroy knows his grip on golf's number one world ranking is tenuous at best, and there's just one way to keep Jordan Spieth and Jason Day at bay.
"It's just about playing well," McIlroy said as he prepared for Thursday's start of the BMW Championship, the penultimate event in the US PGA Tour's four-tournament FedEx Cup playoffs that will end with the Tour Championship.