From NJ.com as nice article about Future Hall of Famer Jon Niese.
Pitching coach Dan Warthen likens him to Yankees stalwart Andy Pettitte: Another left-hander with a lowered arm angle to add a measure of deception. The motion is fluid and simple, protecting his arm during the long season. His fastball resides on the cusp of 90 mph. He throws his curveball for strikes 60-percent of the time.
And this year, he polished a cut fastball for a third weapon. He believes in all three pitches.
“That’s who he is,” Warthen said. “He grew up getting people out. And he expects to get people out.”
via Casual confidence has made Jonathon Niese vital part of Mets rotation | NJ.com.