The NBA Playoff Format and Play-In Tournament Explained (2026-27)

The series format

Best-of-seven in every round

The first round was the last to change. NBA.com's review of 2002-03 records that before that season the first round "was expanded from best-of-five to a best-of-seven." Since then, every round has needed four wins.

2-2-1-1-1, and the 2-3-2 that came before

In a 2-2-1-1-1 series, the team with home-court advantage hosts games 1, 2, 5 and 7; its opponent hosts games 3, 4 and 6. The NBA Finals did not always work that way. The league's October 2013 announcement explains that "over the previous 29 seasons" the Finals used a 2-3-2 pattern, with the team holding home-court advantage hosting games 1, 2, 6 and 7 and its opponent hosting the middle three. From the 2014 Finals the league switched to 2-2-1-1-1, which it said "aligns The Finals format with every other round of the NBA Playoffs."

The same release notes that the Finals had used 2-2-1-1-1 before, from 1957 to 1984, except in 1978. The league's explanation for returning to it was that, with improvements in team air travel and technology, the old reasons for 2-3-2 "largely do not exist anymore."

The March decision: chase the Play-In, or not?

For a front office, the postseason format and the draft order are two halves of one decision, and in 2026-27 the draft half has changed. In May 2026 the league approved the "3-2-1 Lottery" for the 2027, 2028 and 2029 drafts. It expands the lottery from 14 teams to 16 and hands out balls like this:

The chances are our arithmetic, not league figures. They assume that the first ball drawn decides the No. 1 pick, that every ball is equally likely to come out first and that none of the pick restrictions below rules a team out. There are 37 balls: seven non-postseason teams with three (21), the three relegated teams with two (6), the four 9 and 10 seeds with two (8) and the two 7-8 losers with one (2). Three balls therefore give 3 ÷ 37, about 8.1%; two give 2 ÷ 37, about 5.4%; one gives 1 ÷ 37, about 2.7%. The announcement does not describe how the drawing works beyond that, so we have not estimated the odds for any later pick.

Three consequences follow for the GM deciding what to do in March:

• Finishing last no longer maximises your odds. The three worst records lose a ball, so a team that misses the postseason without finishing in the bottom three now has the best chance at the top pick. The relegated teams get a floor of the No. 12 pick in exchange; every other lottery team can fall as far as No. 16.
• Reaching the Play-In costs lottery odds but not all of them. The No. 9 and No. 10 seeds get two balls each, and the losers of the 7-8 games get one each.
• One case is not yet specified. The announcement hands out balls by Play-In seed and by the result of the 7-8 game. It does not say whether a team keeps them if it goes on to win the last Play-In game and enter the playoffs as the No. 8 seed; the league has not yet specified that case.

The new system also bars any team's pick from going first overall in two consecutive drafts or landing in the top five in three consecutive drafts. The limits follow a team's own pick even after it has been traded, which caps how often one franchise's pick can land at the very top.

How draft lotteries work explains the general trade-off lottery designers face, and rebuild vs retool covers the strategic choice underneath.

Postseason races in a simulation

Pro Basketball GM Franchise takes a drafted roster through an 82-game season and the playoff race, with contracts, trades and rotations to manage along the way. The format and lottery described here are the real league's; nothing in this article describes how the app runs its own postseason. The basketball draft simulator guide covers how to read a simulated season without over-reading it. More explainers are collected on the basketball hub, and our management games sit in the sports GM category.