SURPRISE, Ariz. – Cleveland Guardians prospect Trenton Denholm, like many other pitchers in the recent Arizona Fall League, was adjusting to the MLB’s new automated ball-strike challenge system, or ABS, which is set to officially debut in the 2026 regular season.

But he may have the edge over other pitchers.

Denholm has added a knuckleball and sinker to his repertoire, a new approach that he thinks could help him under the new challenge system. His knuckleball is still a work in progress, but he has used the fall league to work through the kinks.

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