Phil Irwin will make his major league debut today.

Phil Irwin is set to make his major league debut today, getting the spot start in place of Wandy Rodriguez. Irwin hasn't been talked about as much as top guys like Gerrit Cole and Jameson Taillon, mostly because he was a 21st round pick and has kind of flown under the radar in the minors. His numbers last year were excellent, but were over-shadowed by Gerrit Cole, who put up almost identical numbers at the same levels. Irwin has gotten some attention early this year, in part because of his Spring Training results, and also in part because of his curveball (which I'll get to in a bit). I started "The Book" series earlier this week with Justin Wilson, giving a closer look at what to expect from prospects who are just cracking the major le...

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