Greg Stiemsma has had his hands full in the Celtics' second-round playoff series against the Philadelphia 76ers.

On Monday night, he again faced challenges on defense as the Celtics struggled early against the sharp-shooting 76ers, who were moving the ball well on offense until the Boston defense slowed them down in the Celtics' dominant third quarter.

But Stiemsma was making a difference even before Boston took the late lead. He came off the bench to spark the Celtics at key points, making all five of his shots on the night for 10 points. He also collected three blocks.

Hear what Stiemsma had to say in the video above.