Should you use Mitch Keller in fantasy leagues this week and beyond?

What should you expect from Pittsburgh Pirates pitcher Mitch Keller now that he is back in the big leagues? Mark Alberti/Icon Sportswire

It has not been a banner year for prized pitching prospects, at least not at the higher levels. Forrest Whitley, Justus Sheffield, and "insert an Atlanta Braves starter" all failed to take leaps forward on the mound. Add in injuries to Brent Honeywell, Jesus Luzardo, Alex Reyes(?!) and Casey Mize -- who was dealing before injury -- and you can see the pitchers did not pan out as well as the top hitting prospects this season.

It is not too late for guys such as Sheffield, Whitley and even Luzardo. They could have some impact down the stretch, but nothing like expected. Going back to one of my favorite Vin Scully-isms, we always blame the player for not living up to expectations, but never those who set them. There is one other pitcher who has failed to live up to his forecast -- reasonable or not -- and that is Mitch Keller.

A second-round pick out of Cedar Rapids, Iowa, in the 2014 draft, Keller was