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2023structural

In-Season Tournament (NBA Cup)

The Rule Change

The NBA introduced an in-season tournament (branded as the NBA Cup) with group play, single-elimination rounds, and a championship game. The tournament used special courts and offered prize money.

Statistical Impact

No direct statistical impact on season averages, but increased competitive intensity in early-season games. The structural innovation was the most significant change to the regular season format since the play-in tournament.

3-Year Average: Before vs. After

StatBeforeAfterChange
PPG111.5114.2+2.7
Pace99.298.8-0.4
3PA34.635.6+1.0
FTA22.322.3+0.0
FG%46.247.2+1.0
2023structural

Expanded Coach's Challenge Rules

The Rule Change

The NBA expanded the coach's challenge system to allow teams to challenge more types of calls, including out-of-bounds violations and goaltending calls throughout the game. Teams now received an additional challenge if their first challenge was successful, allowing for up to two challenges in a game.

Statistical Impact

Increased the strategic dimension of challenges and improved overall officiating accuracy. Coaches became more willing to use challenges on borderline calls knowing they could earn a second one. The expansion reflected the league's growing confidence in replay technology as a net positive for the game.

3-Year Average: Before vs. After

StatBeforeAfterChange
PPG111.5114.2+2.7
Pace99.298.8-0.4
3PA34.635.6+1.0
FTA22.322.3+0.0
FG%46.247.2+1.0

Statistical Context (20152025)