No one in the 78-player field came in under par on the links-style course in Bandon, Ore. on Tuesday as Lorens Chan and Gaston De La Torre share the lead with an even-par 70.
Knapp, who finished sixth in the SCGA Amateur at Big Canyon CC on Sunday, posted three consecutive bogeys on the front nine to go out at 3-over par on Tuesday, but he birdied the 530-yard par-5 16th to join three other players at 4 over.
Three more rounds remain in the prestigious amateur tournament. Knapp earned his invitation after shooting a 61 in the U.S. Open Local Qualifier at Newport Beach Country Club. That was the lowest round posted in the nation during local qualifying for the open.
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