Jalen Johnson had 18 points, 13 rebounds, 10 assists and three steals to lead the visiting Atlanta Hawks to a 117-116 victory over the Boston Celtics on Tuesday in the first NBA Cup game for each team.

After a humbling defeat against the Atlanta Hawks on Tuesday night, the Boston Celtics (10-3) rebounded against the Brooklyn Nets (5-7) with a 139-114 win. On Tuesday, the Celtics were dominated on the offensive glass 20-6.

It wasn't always pretty, but Atlanta dug deep and found a way to win an incredible thriller of a game for their best victory of the season.

Jaylen Brown went for 37 points, but the Boston Celtics still fell to the Atlanta Hawks 117-116 to open the NBA Cup.

Jayson Tatum had 36 points, 10 assists and nine rebounds, Jaylen Brown added 24 points and 12 rebounds and the Boston Celtics beat the Brooklyn Nets 139-114 on Wednesday night.

On Tuesday night, Boston Celtics head coach Joe Mazzulla walked into his pregame press conference with a sweatshirt that featured the word “MINDSET” in a large, bold font. He donned the same sweatshirt after the Celtics were stunned by the shorthanded Atlanta Hawks,