Jimmy Walker and Robert Streb are setting the pace through 36 holes at the 2016 PGA Championship at Baltusrol Golf Club in Springfield, New Jersey.
Both golfers are at nine under following Friday's second round. Emiliano Grillo and Jason Day are tied for second at seven under.
Streb finished with a seven-under 63 for the round, which tied for the lowest single-round score at a major tournament. PGA.com shared a replay of his birdie putt on No. 9 to conclude his second round:
63! @therealstrebber ties a major record with this second round performance at the @PGAChampionship!