Boston Celtics forward Jayson Tatum (0) drives to the basket against Cleveland Cavaliers guard Donovan Mitchell (45) during the first half of an Emirates NBA Cup basketball game in Boston.
This one wasn’t about their perfect season or a 15-game winning streak or even the NBA Cup. This was a chance for the undefeated Cleveland Cavaliers to see where they stood against the defending champions. The Celtics won an unprecedented 18th championship last spring -- rolling over the Cavaliers in five games in the Eastern Conference semis – and entered the season as the favorites to repeat, or at least make it back to the NBA Finals. Cleveland, which won a playoff series last year for the first time since LeBron James left the second time in 2018, wasn’t expected to be a contender. But it was the Cavaliers who shot to the top of the standings this fall, with a franchise-record 15-game winning streak that left them as the last unbeaten team in the league. Coach Kenny Atkinson was the first NBA coach ever to win his first 15 games with a new team.
Boston Celtics forward Jayson Tatum (0) drives to the basket against Cleveland Cavaliers guard Donovan Mitchell (45) during the first half of an Emirates NBA Cup basketball game in Boston.
Boston Celtics guard Jaylen Brown (7) drives to the basket during the second half of an Emirates NBA Cup basketball game against the Cleveland Cavaliers in Boston.
Cleveland Cavaliers guard Ty Jerome, left, tries to put up a shot against Boston Celtics center Al Horford, right, during the second half of an Emirates NBA Cup basketball game in Boston.
Boston Celtics guard Derrick White (9) celebrates after hitting a 3-pointer against the Cleveland Cavaliers during the second half of an Emirates NBA Cup basketball game in Boston.
Boston Celtics forward Jayson Tatum (0) celebrates during the second half of an Emirates NBA Cup basketball game against the Cleveland Cavaliers in Boston.
Cleveland Cavaliers guard Sam Merrill, left, pressures Boston Celtics guard Jaylen Brown (7) during the second half of an Emirates NBA Cup basketball game in Boston.
Boston Celtics center Al Horford (42) drives against the Cleveland Cavaliers during the second half of an Emirates NBA Cup basketball game in Boston.
Cleveland Cavaliers guard Ty Jerome, center, tries to drive between Boston Celtics guard Payton Pritchard (11) and center Neemias Queta (88) during the first half of an Emirates NBA Cup basketball game in Boston.
Cleveland Cavaliers guard Donovan Mitchell (45) sets to drive against Boston Celtics guard Jaylen Brown (7) during the first half of an Emirates NBA Cup basketball game in Boston.
Cleveland Cavaliers guard Darius Garland (10) drives to the basket against Boston Celtics center Al Horford, right, during the first half of an Emirates NBA Cup basketball game in Boston.