The Boston Celtics have struggled to get a strong showing from Kristaps Porzingis, who is still dealing with a linger illness from the winter.

Kristaps Porzingis voiced his frustrations as his illness forced him to leave Game 1 early and had him lacking energy in Game 2.

When Kristaps Porzingis concluded his first six-minute shift Wednesday night, he looked like he’d just run a marathon. His breathing was heavy. He was visibly fatigued. When he took his seat on the Celtics bench, he dropped his head and stared at the TD Garden parquet.