Golf: South Korean Ryu leads second-round in Meijer LPGA Classic

So Yeon Ryu birdied all five par-5 holes to take the second-round lead. South Korean star stood atop the leaderboard at 13-under 131 after second round. Five LPGA Tour winner Ryu is winless this season so far. Tied second Sandra Gal and Sakura Yokomine had eight birdies in bogey-free rounds respectively.