Dear Pharr,
The picture you provided is a bit fuzzy, so I can't see if the spots are delimited by the leaf veins, or any other details.
It might be downy mildew, but I can't tell for sure from the picture alone.
Check out this link yourself and compare symptoms with what you see on your plant:
http://www.ipm.ucdavis.edu/PMG/GARDEN...
Please take some pictures. There are different reasons for white splotches which a picture will help decide almost 9 years ago.