Mariners Monday; Luis Castillo and what vertical approach angle is all about.

The Top Step with Ryan Rowland-Smith

Former MLB Pitcher and current Baseball analyst Ryan Rowland-Smith recaps the Mariners week and breakdown Luis Castillo's fastball and explains 'vertical approach angle' in this Mariners edition of The Top Step.

Grant Balfour will new back later in the week!

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Enjoy mates!

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