Jack Lavin has been the go to guy for Governor Pat Quinn as he has been his chief of staff for more than two years.
Before that Lavin was the director of the Illinois Department of Commerce and Economic Opportunity.
But, as Quinn leaves for Japan Friday, his office announced that Lavin is out and Ryan Croke is the new COS.
Croke, 30, has been a deputy COS for Quinn since November 2009.
“I thank Jack Lavin for his many years of public service and his hard work to restore fiscal stability, integrity and economic prosperity to Illinois,” the Governor said. “I’ve known Jack since I was State Treasurer and I will always consider him a friend. He has done an excellent job building a brighter future for all the citizens of this state.”