Janesville Administrative Services Director Jay Winzenz has more than once stepped into the role of acting city manager. Winzenz has also been the assistant city manager since being named to the post by former City Manger Eric Levitt in 2009. When Levitt left for Simi Valley California, Winzenz even threw his hat in the ring for the job of City Manager. The city council instead decided to hire Mark Freitag. Now, Winzenz is not resuming his duties as assistant city manager. The new city manager says he was informed last week Winzenz was making the decision for "personal and professional reasons."