Here is the complete schedule of events and ticket information for the Grand Prix of St. Petersburg Friday through Sunday in downtown St. Petersburg:Friday7:30 a.m.: USF2000 practice8:10: Pro Mazda practice8:50: Indy Lights practice9:50: World Challenge GT practice10:45: USF2000 qualifying11:20: IndyCar practice12:20 p.m.: WC GTS practice1:15: Pro Mazda qualifying1:15: IndyCar autograph session1:40: Indy Lights qualifying2:25: WC GT practice3:10: IndyCar practice4:10: WC GTS practice6: 5K RunSaturday7:30 a.m.: USF2000 qualifying8: Pro Mazda qualifying8:30: Indy Lights qualifying9:15: WC GT qualifying9:40: WC GTS qualifying10:15: USF2000 Race No. 111:10: IndyCar practice12:10 p.m.: Pro Mazda Race No. 11:05: Indy Lights Race No. 12:20: IndyCar qualifying3:50: WC GT Race No. 15:05: WC GTS Race No. 1Sunday8:45 a.m.: IndyCar warmup9:30: WC GTS Race No. 210:45: Indy Lights Race No. 212:30 p.m.: IndyCar Grand Prix of St. Petersburg (ABC)3:15: WC GT-GTA Race No. 24:30: Pro Mazda Race No. 25:25: USF2000 Race No. 2Tickets: From $20 (Friday general admission) to $135 (three-day reserved seats). 1-877-725-8849 or gpstpete.com.