June 11 (Reuters) - American Ryan Palmer, benefiting from extra work on his putting, produced bogey-free golf to charge into a three-way tie for the lead in the opening round of the FedEx St. Jude Classic in Memphis on Thursday.
Bidding for a fourth victory on the PGA Tour, the 38-year-old Texan piled up six birdies as he carded a six-under-par 64 at the TPC Southwind in the final event before next week's U.S. Open at Chambers Bay.
Also at six under were fellow American Brooks Koepka, who finished birdie-birdie, and veteran Englishman Greg Owen, who competed on the lower-tier Web.