NWSB Insider and Mariners blogger Jon Irwin reports on his predictions for the 2014 Mariners rotation. Seattle has a lot of great prospects in the pipeline, and their development is coming to a head. The 2014 rotation should look a lot different than the 2013 model. Outside of Felix Hernandez and Hisashi Iwakuma, the rest of the rotation is bound for a youth-based overhaul. Even though we’re only one month into the season, 2013 already looks like another tough year for the Mariners.