Coach Tom Thibodeau is a respected coach around the league. Everyone knows about those Derrick Rose and Tom Thibodeau-led Chicago Bulls teams, and the biggest thing those teams were known for is their defense. Having Thibodeau as a coach will improve the defense on most teams, so long as the players buy into his tough and gritty style.
Along with Julius Randle, Tom Thibodeau is credited as somebody who helped revive a Knicks franchise that has struggled prior to this season. A graphic was shown during the recent New York Knicks - Boston Celtics game detailing just how much the New York Knicks have improved defensively under Tom Thibodeau. It seems as though the Knicks improved in multiple defensive categories: that's the Thibodeau effect.
The New York Knicks are certainly not the same team they were last season. It was clear that they had talent on the roster, but they lacked a coach who could put it all together. Tom Thibodeau has been the right choice to get the most out of this group of Knicks players. He has made them into a scrappy defensive team that isn't afraid to do the hard work required in order to get stops.
There is no doubt that the New York Knicks have achieved more than what most people expected. They are firmly in the 4th seed in the Eastern Conference, and they have reminded people what New York basketball looks like. It is clear that Tom Thibodeau was a huge factor in this success: he is one of the best defensive coaches in the league.