A shocking lineup shuffle has taken place at WGN today. John Williams, who's been in the morning drive slot for the last six months, has been pushed back to 9 to noon slot previously held by Kathy & Judy. In Williams' place will be Greg Jarrett, who previously served as an afternoon co-host on San Francisco's KGO-AM. The Trib's Phil Rosenthal has more on today's developments. more ›