An Island Lake man faces between six and 12 years in prison after pleading guilty Friday to sexually assaulting a child in 2012. If 59-year-old Robert Ballarini's case had gone to trial and he were convicted of more than one count of predatory criminal sexual assault pertaining to two separate victims, he would have received a mandatory natural-life prison sentence, prosecutors said. Instead, Ballarini, of the 600 block of Nantucket Way, accepted a partially negotiated plea deal on Friday morning.