Young stud? Yu Darvish? Who will be Yankees’ 2018 ace?

Two years ago, we at The Post developed an annual parlor game called “Guess the Yankees’ Ace!” and it really took off. Melissa McCarthy will play the role of me in the movie version this summer.

The 2017 version looks like a stinker, though. Masahiro Tanaka, coming off his third and best season in the majors, ranks as the overwhelming favorite. Unless you were playing the odds in hopes of financial gain, why would you select anyone else?

So let’s fast-forward to a year from now, when the Yankees’ pitching future appears cloudier than China on a bad smog day. Who will be the Yankees’ ace in 2018? That, friends, ranks as a wide-open question. The foundation to that answer lies in how all of the…