
NWSB insider and Mariner’s writer Jon Irwin brings us his preseason review of the Mariner’s top pitching prospects. The Big Three headline this talented list of power arms and could-be-aces. Just remember not to sleep on closer of the future Carter Capps and potential top of the rotation pitcher Brandon Maurer. While Taijuan Walker has the longest to go of any of the big three, he has the most upside as well.











