Why Neil Walker believes J.A. Happ’s a perfect fit for Yankees

It feels a lot like 2015 to Neil Walker. He’s on a contender that has added J.A. Happ before the trade deadline. And if Happ performs as he expected, like he did three years ago upon joining the Pirates, going 7-2 with a 1.85 ERA in 11 starts to help Pittsburgh reach the NL wild-card…