USA TODAY US Edition USA SNAPSHOTS © 2018-03-05 - AJ Foyt Racing’s Matheus Leist is set to become the 17th teenager to race in IndyCar. ELLEN J. HORROW, JANET LOEHRKE/USA TODAY NOTE Leist will be 19 years, 6 months and 4 days old when he starts Sunday's season-opening Grand Prix of St. Petersburg. SOURCE Verizon IndyCar Series