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2007 U.S. Am champ Knost leads RBC Heritage by two strokes

By Ryan Ballengee
Apr 13, 2012 6:09 PM ET

Colt Knost leads the RBC Heritage at the halfway mark by two shots. Knost shot a bogey-free, 5-under 66 at Harbour Town on Friday to lead Carl Pettersson (65) by a pair.

Former two-time Heritage winner Boo Weekley and rookie Harris English are tied for third at 6 under.

Chad Campbell and Robert Garrigus are 5 under, ahead of Fredrik Jacobson, Bob Estes, defending champion Brandt Snedeker and Kevin Na. The highlight of Estes' round was a hole-in-one at the par-3 fourth hole.

World No. 1 Luke Donald will see the weekend with a chance to maintain his top spot in the Official World Golf Ranking. Donald shot 2-under 69 to trail Knost by 11 shots going into the final 36 holes. Donald must finish in the top 8 to keep the No. 1 ranking ahead of Rory McIlroy.

Tags: Colt Knost, Carl Pettersson, Luke Donald, Rory McIlroy

Rory McIlroy and Graeme McDowell at the 2013 BMW PGA Championship

McIlroy, McDowell among notables to miss BMW cut

by Will Gray | May 24, 2013 2:10 PM ET

World No. 2 missed the cut Friday at the BMW PGA Championship, one of several notable players that will not participate this weekend at the European Tour's flagship event. Read More