Li at his best and builds early lead at PGA Championship

Tom Fleetwood of England, reacts after missing a putt on the sixth hole during the second round of the PGA Championship golf tournament at TPC Harding Park Friday, Aug. 7, 2020, in San Francisco. (AP Photo/Jeff Chiu)

Li Haotong of China, hits from the fairway on the 10th hole during the second round of the PGA Championship golf tournament at TPC Harding Park Friday, Aug. 7, 2020, in San Francisco. (AP Photo/Charlie Riedel)

Haotong Li of China, watches his tee shot on the ninth hole during the second round of the PGA Championship golf tournament at TPC Harding Park Friday, Aug. 7, 2020, in San Francisco. (AP Photo/Charlie Riedel)

Li Haotong of China, hits his tee shot on the 10th hole during the second round of the PGA Championship golf tournament at TPC Harding Park Friday, Aug. 7, 2020, in San Francisco. (AP Photo/Charlie Riedel)

Tom Fleetwood of England, watches his tee shot eighth hole during the second round of the PGA Championship golf tournament at TPC Harding Park Friday, Aug. 7, 2020, in San Francisco. (AP Photo/Jeff Chiu)

Phil Mickelson hits from the fairway on the ninth hole during the second round of the PGA Championship golf tournament at TPC Harding Park Friday, Aug. 7, 2020, in San Francisco. (AP Photo/Charlie Riedel)

Tiger Woods hits his tee shot on the second hole during the second round of the PGA Championship golf tournament at TPC Harding Park Friday, Aug. 7, 2020, in San Francisco. (AP Photo/Charlie Riedel)