The parity era continues in the NBA.

The New York Knicks haven't won an NBA championship since 1973. The Indiana Pacers won their most recent title that year — in the ABA. The Oklahoma City Thunder franchise has one title in its history, that coming in 1979 when the team called Seattle home. And, the Minnesota Timberwolves have never even been to the NBA Finals.

Meet the NBA's final four.

When Commissioner Adam Silver hands one of those teams the Larry O'Brien Trophy next month, it'll mark a league first — seven championship franchises in a seven-year span.

There hasn't been a back-to-back NBA champion since Golden State in 2017 and 2018. From there, the list of champions goes like this: Toronto in 2019, the Los Angeles Lakers in 2020, Milwaukee in 2021, Golden State in 2022, Denver in 2023 and Boston last season.

It's the longest such run of different champions in NBA history; Major League Baseball, the NHL and the NFL have all had longer ones, and not too long ago, either.

But for the NBA, this is different. The league wanted unpredictability, especially after four consecutive Cleveland vs Golden State title matchups from 2015 through 2018.

Things have been highly unpredictable since. No matter what the Finals matchup is this year, the NBA will be seeing 11 conference-champion franchises in the span of seven seasons.

"We've still got eight more wins to achieve our ultimate goal," Minnesota coach Chris Finch said. "We've still got two more series. We're only halfway there."

The season is over for 26 of the NBA's 30 clubs, but the fun stuff is just starting.

The Western Conference finals — No 6 seed Minnesota vs No 1 seed Oklahoma City — begin Tuesday night in Oklahoma.

The Eastern Conference finals — No 4 seed Indiana vs No 3 seed New York — begin Wednesday night in Manhattan.

The Wolves lost the West finals last year; the Pacers lost the East finals.

"You've got to have big dreams," Pacers coach Rick Carlisle said. "You don't know how often you're going to be in this position."

Indeed, the championship window for teams doesn't seem to be staying open as long as it did in the past.

Boston was a huge favorite to win its second straight title; the Celtics didn't get out of Round 2, in part because they couldn't hold onto big leads, and in part because Jayson Tatum ruptured his right Achilles tendon in that series with the Knicks.

"Upset or not, whatever it is, we beat a great team," Knicks guard Jalen Brunson said.

"They obviously lost a huge piece, but they're still a great team."

Damian Lillard tore an Achilles tendon in Round 1, ending Milwaukee's hopes. Cleveland, the top seed in the East, bowed out in Round 2 against Indiana, with a slew of Cavs left dealing with health issues. Stephen Curry strained his hamstring; that was all it took to doom Golden State's chances in Round 2 against Minnesota.

"He's our sun," Golden State coach Steve Kerr said. "This is a solar system. He's our sun."

And now, the NBA solar system is about to see new star holding the trophy.