Golf-Koepka hits the front at St. Jude Classic

June 12 (Reuters) - Brooks Koepka fired a three-under-par 67 for a one-shot lead after the second round of the FedEx St. Jude Classic in Memphis on Friday.

Big-hitting Koepka made four birdies and a single bogey to move to nine under for the tournament, with Austin Cook a shot behind after one of the day's top rounds, a six-under 64.

Australian Steven Alker is a shot further back, and a group of seven players are bunched at six under.

Alker, who started on the 10th, had a hot stretch coming home on the front nine, reaching 10-under par before finishing bogey, double bogey to fall back.

Five-times major winner Phil Mickelson, who will head to Chambers Bay searching for a first U.S. Open win…