It’s been almost a month since the Detroit Pistons looked up at the scoreboard at the end of a game and saw a loss.

The Pistons rattled off 13 straight wins to tie the franchise record for consecutive victories, but that came to an end Wednesday night in Boston as the Celtics handed Detroit a 117-114 defeat at TD Garden as part of NBA Cup group play.

Cade Cunningham posted a game-high 42 points on 46% shooting, but it wasn’t enough to push the Pistons (15-3) to what would’ve been a standalone franchise-record 14th straight win.

The Celtics (10-8) shot 47% (20-of-43) from three and got a 33-point night out of Jaylen Brown to be the first team to knock off the Pistons since Oct. 27.

Early offense wasn’t hard to find as Duncan Robinson hits a pair of early three-pointers and Cunningham go

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