This is the second time I've shown how autographs progress over the years. The first installment was Andrew McCutchen which changed quite a bit. Neil doesn't sign near as much as Cutch so the auto stayed a little more consistent.
I'm hoping Neil gets some new autos as he really hasn't had much since 2012. While his signature did get quicker I don't consider it terrible. On the scale of Wil Myers to the perfect auto I would put Neil somewhere in the middle.
Have a nice weekend.