Campbell's status uncertain after injuring calf at Colonial

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FORT WORTH, Texas (AP) -- Masters runner-up Chad Campbell has withdrawn from the Crowne Plaza Invitational with a calf injury three weeks before the next major.

Campbell, who was part of a three-way playoff at the Masters, was hurt playing a shot around the 17th green during Friday's second round at Colonial Country Club. Afterward, he stood with several others from his group, then dropped down to the ground.

The U.S. Open at Bethpage Black starts on June 18.

Campbell shot a 3-under 67 in the first round. Starting at No. 10, he was 2-under through seven holes when he was hurt.