Defending champ Lilia Vu (back) withdraws from Chevron

(Photo credit: Bob Frid-USA TODAY Sports)
Defending champion Lilia Vu withdrew from the Chevron Championship moments before her first-round tee time Thursday afternoon due to a back injury.

According to the LPGA, Vu withdrew after her pre-round warmups. Vu had been battling the injury earlier this season and said before the first major of the season that her body felt "95 percent there."

Ranked No. 2 in the world, Vu wa