Rio Takeda overcame a double bogey at the turn with four birdies over her final seven holes Thursday for a 5-under 67 to share the lead with Eri Okayama in a Women's British Open that featured a Japanese surge and a mixed day for Lottie Woad.

England's Lottie Woad endured a frustrating start to the AIG Women's Open as Japan's Eri Okayama and Rio Takeda topped the first-round leaderboard at a sunny Royal Porthcawl on Thursday.