Nic Claxton had 18 points, 11 rebounds and 12 assists for his first NBA triple-double and the Brooklyn Nets beat the Boston Celtics 113-105 on Friday night for their first victory in the NBA Cup in-se

The Celtics dropped to 1-2 in an NBA Cup in Group B with the defeat, essentially eliminating them from advancing to the knockout round. They are back to .500 on the season with an 8-8 record. Boston gets one day off before hosting the Magic on Sunday night at TD Garden. Here are four takeaways from the Nets loss on Friday night:

The Brooklyn Nets hoped a second crack at the Boston Celtics would be enough to get them their third win of the season tonight. It was enough for that, a career night for one vet, and some well sought-after rookie progress.

The Boston Celtics suffered a brutal loss to the Brooklyn Nets tonight, dropping to an 8-8 record and a 1-2 record in the Group stage of the NBA Cup. Boston walked into tonight expecting to win, especially after having beaten the Nets earlier this season.

Joe Mazzulla needs to find that energy every game now for the Celtics to have a chance against tough opponents. On Friday, he waited too long, keeping Hugo Gonzalez on the bench until the fourth quarter and keeping Jordan Walsh on the sidelines during the Nets’ 19-4 run. Those were the only two guys Brown praised after the loss.

The Celtics came into Friday night’s NBA Cup game against the Brooklyn Nets with some swagger. They had won 3 in a row and looked like they were ready to turn a corner. Then the 2-win Nets came in and beat Boston 113-105 in a very frustrating loss.

The Nets beat the Celtics 113-105 in Friday's NBA Cup game and while the first three quarters look eerily similar to Tuesday, Brooklyn made sure that the end of the game was a different story. Forward Michael Porter Jr.