D-backs' Collmenter expanding pitching repertoire

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SCOTTSDALE, Ariz. (AP) -- Josh Collmenter baffled hitters last season with his unconventional over-the-top delivery en route to becoming a vital piece of the Arizona Diamondbacks' NL West championship team.

The concern with a pitcher like Collmenter, who relies on deception, is that once hitters have faced him a few times, they will be able to make adjustments. That's why he's adding to his pitching repertoire.

Collmenter compiled a 10-10 record with a 3.38 ERA during his rookie season. His deceptive motion confused hitters so much that the Collmenter established a franchise record by not allowing a run in his first 15 innings as a starter.

Collmenter will get the start Saturday when a Diamondbacks split squad plays at the San Francisco Giants.