The numbers are crystal clear. I looked at Kyrie Irving's offensive and defensive stats for the past three seasons, his last year with Cleveland and his first two with Boston. He clearly has adapted to his role with the Celtics.
With the Cavaliers in the 2016-17 season, he was all offense. He was rated 9th in Offensive Rating (OR) and 409th in Defensive Rating (DR). His average line was 25 PPG, 3.2 RPG, 3.2 APG, 1.2 SPG and 0.3 BPG.
His first season with Boston, things shifted.