25-1: Lydia Ko

The braintrust at William Hill installed 15-year-old Lydia Ko at 25-1 for the Women's Open Championship, making her a joint 10th favorite.

Judging by the glowing praise from her colleagues as quoted in Alistair Tait's story, no one is counting her out.

“You can’t quite believe how good she is at 15,” said Scotland’s Catriona Matthew, the 2009 Women’s British Open champion. “Just the composure she showed on the last day. She actually went away from the field. It’s slightly embarrassing to be beaten by a 15-year-old. She’s obviously a fantastic player with huge potential.”