Kristaps Porzingis motivated by Phil Jackson's comments

Kristaps Porzingis is 'fired up' and trying to put on muscle before his first season in the NBA.Kristaps Porzingis isn't sure why Phil Jackson compared him to draft-bust Shawn Bradley, but the rookie is motivated to change those doubts from the Knicks president.

Porzingis, speaking Wednesday at an event to unveil his sponsorship partnership with Shifman Mattress, acknowledged that Jackson's public concern over his lanky body "fired me up," even if that wasn't the Zen Master's intention.

"Yeah I saw it. I don't know what to say? I guess that's what Phil does, gets us to work hard and fired up. That fired me up. Im like, 'I'm not Shawn Bradley, you know?" Porzingis said, responding to a recent…