Brown made six birdies in a row on his front nine and had eight birdies in nine holes at one point. Brown shot an 8-under 64, rising to a tie for 41st. He began the day in 117th place after shooting an even-par 72 in his first round as a pro.

The American Express holds a unique distinction on the PGA Tour: It's the only event that is played on three golf courses. The tournament is played on the Pete Dye Stadium Course at PGA West,