INDIANAPOLIS — Former Indianapolis Colts star Shaquille Leonard introduced himself to the team during his first training camp practice by intercepting Andrew Luck. The three-time All-Pro and 2018 AP NFL Defensive Rookie of the Year will announce his formal retirement during a halftime ceremony Sunday, team officials said Wednesday. Leonard also will bang the team's anvil before the Colts host the Las Vegas Raiders. “He played the game the way it was supposed to be played," said Colts linebacker Zaire Franklin, who also was part of Indy's rookie class in 2018. Leonard finished the season with 163 tackles and was selected an All-Pro along with Colts first-round pick Quenton Nelson.