Tokyo: Defending champion Brooks Koepka will take a four-stroke lead into the final day of the Dunlop Phoenix Tournament after firing a sizzling seven-under-par 64 in the third round on Saturday.

The US Open champion mixed eight birdies with a single bogey at Phoenix Country Club in Miyazaki to move to 16-under 197 for the tournament, four shots better than South Korean Lee Sang-hee, whose 66 was good enough for second place. Koepka’s compatriot Xander Schauffele hit five birdies and a single bogey in his 67 for third place on 11-under, with another South Korean, Ryu Hyun-woo, a shot further back in fourth after a 69. Japan’s world number four Hideki Matsuyama bogeyed his penultimate hole to drop to a level-par 71.