John Sickels of Minor League Ball features Mets rookie Chris Schwinden in his Prospect of the Day Series. He writes:

There is nothing special about his velocity, his fastball is just in the 86-90 range. He mixes in a cutter, curveball, and changeup, relying on sharp command of his secondary pitches to succeed. He has little margin for error and needs a strong defense behind him, but there are pitchers with worse stuff who have made careers for themselves due to superior command, and he’s shown the ability to make adjustments to higher level competition.

Schwinden really snuck up on us this year, but I don’t see him as a total fluke. I think he projects as a fifth starter or long relief type as long as his command remains strong.

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Seems very similar to Dillon Gee in many respects, and while having one of these types in your rotation is completely plausible, two pitchers like this could make things a lot easier on opposing offenses.