Oh, except this one isn't "official."
"It's Buehrle unless something drastic happens," Guillen told reporters, including Mark Gonzales of the Chicago Tribune.
Buehrle will be making his ninth opening-day start, so it's hardly a surprise. Still, it's a rite of spring for each one of these to be made public. Few will be surprising, but many managers will make sure they keep it under wraps as long as possible, for some reason.
So here's the list we've got so far:
White Sox -- Mark Buehrle-- C. Trent Rosecrans
For more baseball news, rumors and analysis, follow @cbssportsmlb on Twitter or subscribe to the RSS feed.