Raptors point guard D.J. Augustin has learned plenty in five years in the league - and being ready when the games are for real is one of those things. Augustin, who got the nod as Kyle Lowry’s backup following the pre-season, got that spot primarily on reputation. Raptors head coach Dwane Casey knew what he would get when the “popcorn started popping,” which is how he describes the games that count. He wasn’t disappointed in what he got from Augustin on Wednesday in a win over the Boston Celtics in the season opener. Augustin gave him 18 1/2 minutes off the bench, which included five points and a second-quarter boost “I thought he did an excellent job of coming in,” Casey said. “That buys more security and more confidence in him to get (Lowry) out a little quicker. Kyle went a little longer in the first quarter just because I wasn’t sure. But D.J. came in and did a hell of a vets’ job with his backup minutes.”