Matt Harvey didn't throw his slider much until the end of last season, but he's ready to add the pitch to his arsenal full-time in 2016.
The New York Mets right-hander wasn't sure if it was a "a forearm-strength thing or a feel thing" and in late July, it was reported that he made adjustments to his slider with pitching coach Dan Warthen.
In April 2015, Harvey's slider spun at 2,083 rpm and had an average movement of 2.4 inches. By September, those numbers were up to 2,336 rpm and 4.9 inches.
If Harvey is able to effectively use that slider all season, his 2016 effort could be even better than what he produced in 2015.