Cassius Marsh is my rookie to watch this yr. Marsh was a former 300lb DT so he knows the game in the trenches and how to succeed in the trenches. He later slimmed down for the outside DE/5-tech so he can set the edge against OT and has short area quickness. Marsh was 255 when he was drafted but has been working on adding muscle in the offseason and is up close to 270. Cassius Marsh also has been working with trainer Jay Glazer in training MMA for a few years which means he has advanced his hand fighting and use of leverage more than most rookies. Marsh seems to have that dog in him that u need to thrive in Seattle's locker room and especially its defense.