Meanwhile, rookie Russel Henley took a two-shot lead at the halfway stage of the PGA Tour's Sony Open in Hawaii.

CNN: Golfer climbs out of 'abyss' to live dream

In 2004, she became the fourth, and youngest, female to play a PGA Tour event at the Sony Open in Hawaii.

NPR: Wie Revamps Game After Worst Year Of Career

Day, ranked 43rd, beat 2007 Masters winner Zach Johnson in his opening match and then disposed of American PGA Tour rookie Russell Henley -- who won the Sony Open in Hawaii last month.

CNN: Bubba Watson joins WGC casualty list