Ko shot a 2-under-par 69 for a second consecutive day, leaving her tied for fifth, five shots behind the leader, Mi Hyang Lee.
Ko said she rolled her ankle stepping on a “metal stump” in Thursday’s first round while walking the 14th hole. She played Friday with supportive tape on her leg.
“It’s better than it looks,” Ko said. “It’s kind of bothering me, but it’s not painful. It doesn’t affect me when I’m hitting the ball.”
Ko has one last chance to make history as a “youngest-ever” major winner this weekend. If she wins the Evian Championship, she will become the youngest woman to win a major championsip. She will be 18 years, 4 months and 20 days old on Sunday. Morgan Pressel was 18 years, 10 months and 9 days old when she won the Kraft Nabisco in 2007.
Ko, No. 2 in the Rolex world rankings, also has a chance to take back the No. 1 ranking. She can do so if she wins Evian and current No. 1 Inbee Park finishes T-17 or worse. Park is T-20 through two rounds.