Dennis Colleran highlights

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Dennis Colleran's strikeout in High-A debut

This browser does not support the video element. Royals prospect Dennis Colleran records a strikeout in his High-A Quad Cities debut June 25, 2025

Dennis Colleran's first professional strikeout

This browser does not support the video element. Royals prospect Dennis Colleran fans the first professional batter he faces in his Single-A Columbia debut April 5, 2025