Four names were bouncing around in my head very early on the OAD process this week, and one name always seemed to stand above the others. I like Charles Howell III and Bill Haas for a OAD this week, but not as much as Phil Mickelson and Brandt Snedeker. (I didn't see this as the right play for Day in this format even before the illness.)
Both Mickelson and Snedeker have solid current form and great course history. There is an argument to save Sneds for Pebble Beach, but he also has the weight of defending there. Mainly for that reason, I'm going to go ahead and burn Snedeker this week at Torrey Pines.
Best of luck to all!