Two more matches have gone beyond the regulation 18 holes. Doris Chen, the 2010 U.S. Girls' Junior champion, just fell to Mexico's Gabriela Lopez on the 20th hole.
And the 2011 Girls' Junior champion, Ariya Jutanugarn, just defeated Germany's Sophia Popov on the 19th hole with a birdie-3. Popov, a University of Southern California sophomore, recently played in the Women's British Open at Carnoustie.
All told, we had eight extra-hole matches in the first round and 19 of the 32 matches went at least 18 holes. That tells you how competitive this championship has become.
Could this be a harbinger of future rounds?