Olympic gold medalist and LPGA Hall of Famer Lydia Ko moved to within a shot of the lead with a 5-under 67 Friday after two rounds of the HSBC Women’s World Championship. The South Korean-born New Zealander had a two-round total of 6-under 138 on the Tanjong course at Sentosa Golf Club. First-round leader A Lim Kim held the lead after 36 holes with a 69 Friday.