Some of the credit for the Raptors championship also goes to the coach Nick Nurse.
Coach Nurse outcoached Warriors coach Steve Kerr.
He had a good game plan to contain GSW by preventing the Warriors from scoring fast break points on transition. Raptors played the NBA Finals at their own temp and their preferred half court style. Nurse preached defense first for the Raptors.
The team's defensive rotations were good.
Coach Nurse used a combination of man to man and zone defence in the Finals and especially the Eastern Conference Finals in order to contain the opposing team's star players.
A good example of the man to man and zone defence combo is Kawhi defending Atentokounmpo with two Raptors defending in the post during the Eastern Conference Finals.
When the Warriors had a switch on defence in game 6 of the Finals, with the slow moving Cousins guarding Van Vleet, Raptors players were coached well to recognize the switch so that Van Vleet passed the ball from the 3 point arc to Ibaka in the post for the easy bucket.
Steph Curry is supposed to guard Van Vleet but the Warriors coaching staff decided to switch to Cousins to defend Van Vleet. Big mistake. There's no way that Curry can guard the bigger guy Ibaka haha.
The Raptors' 1 and 5 (point guard and centre) screen and roll plays that coach Nurse used on the Warriors helped the team score points.