premise: Tim McGraw has yet to work with Reese Witherspoon.
hypothesis: Four Christmases . It stars Vince Vaughn and Reese Witherspoon , with Sissy Spacek , Mary Steenburgen , Robert Duvall , Jon Voight , Jon Favreau , Tim McGraw , Dwight Yoakam , and Kristin Chenoweth as supporting cast . Tim McGraw . McGraw has ventured into acting , with supporting roles in The Blind Side ( with Sandra Bullock ) , Friday Night Lights , The Kingdom , Tomorrowland , and Four Christmases ( with Vince Vaughn and Reese Witherspoon ) , and lead roles in Flicka ( 2006 ) and Country Strong ( 2010 ) .