NBA Opening Day 2026: Pistons’ 23-0 Run Stuns Celtics as Knicks Raise Championship Banner

NBA opening day 2026 delivered a historic comeback, a coronation and a new era all at once. The Detroit Pistons stormed back from 22 points down to beat the Boston Celtics 121-113 in the season’s first game on Tuesday, powered by a stunning 23-0 fourth-quarter run. Hours later, the defending champion New York Knicks raised their championship banner at Madison Square Garden — their first title in 53 years — before facing LeBron James and the new-look Philadelphia 76ers. The night closed with a Western Conference finals rematch between the Oklahoma City Thunder and San Antonio Spurs.

It was the first-ever NBA opening-day tripleheader, broadcast nationally on NBC and Peacock — the centerpiece of the league’s effort to turn opening night into an all-day event in Year 2 of its 11-year, $27-billion media rights partnership with NBC.

Pistons 121, Celtics 113: The 23-0 Run That Made History

With 8:35 to play in the third quarter at Little Caesars Arena, the Pistons trailed 72-50 and were staring at a home loss to open the season. Then Detroit leaned into its defensive identity — and caught fire from deep. A dominant 23-0 run in the fourth quarter gave the Pistons definitive control and powered the 121-113 win, according to Reuters and Field Level Media.

The 22-point comeback was the largest opening-day comeback for an NBA team in the play-by-play era, according to NBA Communications, via the Detroit Free Press. Detroit held Boston to 38.5% shooting in the second half and won the second-chance battle 24-16.

Duncan Robinson scored 15 of his 21 points in the fourth quarter, going 5-for-9 from three. Cade Cunningham and Jalen Duren scored 22 points apiece — Cunningham adding eight assists, Duren nine rebounds and two steals. Javonte Green came off the bench for 19 points in 18 minutes (5-for-8 from three), and Ausar Thompson stuffed the sheet with 11 points, 11 rebounds and five assists.

“We just didn’t do our brand of basketball good enough in the first half and we had to turn it up,” Cunningham said. “We had a good talk at halftime and lit that fire a little bit better.”

The Pistons, who posted an Eastern Conference-best 60 wins last season, trailed 58-45 at halftime after a 15-0 Boston second-quarter run. The afternoon tip — a 3 p.m. ET experiment complete with “College Gameday-style activations,” a “Blue Carpet” experience and a marching band rendition of “Roundball Rock” — became an instant classic instead of a quiet matinee.

Paul George’s 38-Point Celtics Debut Spoiled

The loss wasted a spectacular Boston debut for Paul George, who scored a game-high 38 points — the most by any player in his Celtics debut, per the Philippine Star. The 36-year-old nine-time All-Star, obtained from Philadelphia in a July trade that sent Jaylen Brown to the 76ers, added five rebounds, five steals and three assists.

George fired in three 3-pointers in a 52-second span coming out of halftime to give Boston its biggest lead at 72-50. But Javonte Green checked in shortly after, slowed George down, and sparked Detroit’s rally with 11 third-quarter points of his own.

Payton Pritchard and Derrick White scored 17 apiece for Boston, but Jayson Tatum was held to 13 points on 6-for-23 shooting (with 11 assists). Robinson’s personal 11-0 burst pulled Detroit within one at 99-98, and Green’s three-pointer with 3:33 left capped the 23-point run for a 112-99 lead Boston never recovered from.

Knicks Raise Banner; LeBron James Debuts for the 76ers

The evening’s emotional peak came at Madison Square Garden, where the Knicks raised their championship banner and received their rings before the 7 p.m. ET tip against Philadelphia — celebrating the franchise’s first NBA title in 53 years, per USA Today. New York returned nearly all of the title-winning roster, including Finals MVP Jalen Brunson, Karl-Anthony Towns and OG Anunoby.

Their first test could hardly be bigger: LeBron James, starting his record 24th NBA season, debuting for the Philadelphia 76ers after choosing Philly “for the chance to win,” according to NBC Sports. The 76ers have rocketed into title contention by pairing James and the newly acquired Jaylen Brown with Joel Embiid, Tyrese Maxey and VJ Edgecombe.

The nightcap — a 9:30 p.m. ET rematch of last season’s epic Western Conference finals, won by the Spurs in seven games (111-103 in the Game 7 at Oklahoma City) before San Antonio fell to the Knicks in the Finals — closed out the opening-day slate, with Shai Gilgeous-Alexander’s Thunder visiting Victor Wembanyama’s Spurs.

A New Era: NBC Turns Opening Night Into Opening Day

The tripleheader format is an experiment the league hopes becomes tradition. “We kind of challenged the NBA,” NBC Sports executive vice president Justin Byczek told USA Today. “We think opening day should be expanded, and over the course of the next decade, let’s try to understand where opening day can get to.”

Sources: Reuters/Field Level Media (Pistons-Celtics recap), USA Today (opening-day tripleheader), NBC Sports (LeBron’s 76ers debut), Detroit Free Press (comeback record).

FAQ: NBA Opening Day 2026

Who won the NBA season opener?

The Detroit Pistons beat the Boston Celtics 121-113 on October 20 at Little Caesars Arena, rallying from 22 points down with a 23-0 fourth-quarter run — the largest opening-day comeback in the play-by-play era.

How many points did Paul George score in his Celtics debut?

Paul George scored a game-high 38 points in his first game for Boston — the most by any player in his Celtics debut. The 36-year-old was acquired from Philadelphia in a July trade that sent Jaylen Brown to the 76ers.

When did the Knicks last win the NBA championship before 2026?

1973 — 53 years ago. The Knicks raised the 2026 championship banner at Madison Square Garden on opening night before facing the 76ers, with Finals MVP Jalen Brunson leading the returning roster.

Where is LeBron James playing in the 2026-27 season?

LeBron James is with the Philadelphia 76ers, starting his record 24th NBA season. The 76ers also added Jaylen Brown to a core featuring Joel Embiid, Tyrese Maxey and VJ Edgecombe.