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NORTON, Mass. -- Brendon de Jonge opened with a 6-under 65 in the Deutsche Bank Championship on Friday that allowed the Zimbabwean to wonder if this might be the week he breaks through with his first win.

De Jonge had a two-shot lead over nine players, including Rickie Fowler and Henrik Stenson.

Jason Day, who needs a victory to become No. 1 in the world for the first time, played in the tougher morning conditions and shot a 68.

World No. 1 Rory McIlroy had a 70, while Jordan Spieth had his third straight round over par. Spieth had eight bogeys in a round of 75.

Thumbnail photo via Mark Konezny/USA TODAY Sports Images