Kristaps Porzingis admitted he's tired following the Knicks' 121-103 loss at the Wizards on the second night of a back-to-back.

“It’s a back-to-back,” Porzingis said. “Not to make excuses but it’s always tougher to play the back-to-backs. I think it got to us. When it got tough, it was also tough mentally for us. Our energy just wasn’t there. They had three days rest and they came out fresh. We didn’t have it in the second half.”

When asked if he’s including himself for having low energy, Porzingis added: “Definitely. I’m tired. I’m tired. I’m so tired right now. I have one day now to rest my legs and then get back and play better and have more energy and also try and bring the team’s energy up."

Porzingis finished with 16 points on 5-for-13 shooting.

Porzingis had a PER of 24.1 in November, 19.7 in December and now 5.4 during the first two games of 2018. Porzingis also faded and dealt with injuries in his first two NBA seasons.