Park, Kerr tied for lead in Canada; Lewis withdraws

World No. 1 Inbee Park shot a 5-under round of 65 at the Royal Mayfair Golf Club on Friday and is tied for the lead with American Cristie Kerr after two rounds of the CN Canadian Women's Open in Edmonton, Alberta. 

 Kerr shot a 4-under round of 66 and the pair is at 8-under, one shot ahead of France's Karine Icher and American Angela Stanford. England's Laura Davies, American Paula Creamer and defending champ Lydia Ko, an amateur from Australia, are two shots off the pace at 6-under. 

 Park is already a six-time winner in 2013, including the first three majors of the year, and played the first two rounds with Kerr. 

"I think it's always good when you're playing with a partner while she's making a lot of birdies and it makes you want to have more birdies," said Park. "It already felt like a final round, and trying to make more birdies and trying to get the momentum going."

Park birdied the first two holes and finished the rounds with just 25 putts. Meanwhile, Kerr's round featured six birdies and two bogeys. The two will tee off in the final group Saturday.

"It's always fun to play with Inbee," said Kerr. "She always plays well, and I enjoy playing with her."

--Stacy Lewis withdrew before the second round, citing illness. The world's No. 2-ranked player, who won the British Open earlier this month before being part of the Solheim Cup rout levied by Europe last week, later took to Twitter to apologize for not finishing the tournament.

"I'm sorry to all my fans, that was the first time I have pulled out of an event. The craziness of the last few weeks finally hit me," Lewis tweeted. "Time to take care of myself!"

--Michelle Wie missed the cut after shooting a 76 on Friday and finishing 9-over through two rounds.