Beware a motivated Park In-bee at U.S. Women's Open

Park In-bee of South Korea hits off the ninth fairway during the first round of the LPGA Canadian Women's Open golf tournament in Coquitlam, British Columbia August 23, 2012. REUTERS/Andy Clark

LANCASTER, Pennsylvania (Reuters) - World number one Park In-bee is usually seen as the player to beat in women's golf majors these days, and now the Korean has extra motivation at this week's U.S. Women's Open.

Park, who has won five of the last dozen majors with no other rival notching more than one in that span, is coming off a missed cut and a poor putting week -- two rarities for the 26-year-old South Korean.