Don't mess with Texans this week at Valero Texas Open

As the PGA Tour nears the halfway mark of its Fall Series, and with just four official tournaments remaining on the schedule after this week, the tour turns to the Lone Star state for the Texas Valero Open.

Defending champion Justin Leonard is looking to cap a remarkable 2008 season that some believe started with a win in the 2007 event at the La Cantera Golf Club in San Antonio. But he'll have some stiff competition in the field this week with the likes of Ryder Cup teammate and fellow Texan Chad Campbell looking for his first win of the year.

So who will take home that oversized winner's check and who could help secure their PGA Tour card for 2009? Our experts break down their predictions into four categories.

Want a different viewpoint on who might win? Try the ESPN.com FOREcaster.