April 5 (Reuters) - A jubilant Kim Si-woo aced the 16th hole to push his lead to four strokes after the second round of the Texas Open at San Antonio on Friday. A group of six players, including headliners Jordan Spieth and Rickie Fowler, were left in second place after the overnight leader’s hole-in-one. Kim, who started the day with a one-stroke advantage, drove a nine iron to the green at the 167-yard par-three then watched the ball bounce into the hole. The South Korean world number 61 tossed his club aside and thrust both arms into the air in celebration at his second career hole-in-one. Kim, aiming for his third PGA Tour victory, ended the round at 12-under 132 thanks to four birdies and the ace in his second consecutive 66. Spieth and Fowler, who both shot 68 for the second round in a row, shared second with fellow Americans Harold Varner (66) and Adam Schenk (66) as well as Canadian Corey Conners (67) and Kim’s compatriot Lee Kyoung-hoon (67).
Reporting by Gene Cherry in Raleigh, North Carolina, editing by Nick Mulvenney