Casey has been one of the more overlooked interior defenders over the last couple of years. His early fans may have worried when the Titans decided to switch to a gap-diverse system with more 3–4 looks last season. After all, the general assumption is that tackles who stand 6' 1" and weigh around 300 pounds aren’t tall enough to get the right kind of leverage at the end position, nor are they heavy enough to beat blockers at the point of attack as nose tackles. But Casey was able to dispel these concerns, showing his versatility at multiple positions more than ever last season. He played his usual pass-rushing tackle position very well, but he also showed a real knack for getting pressure as a stand-up rusher. Casey’s most dominant trait is probably his lateral agility—he can zip across multiple gaps in a hurry, making him a stellar stunt defender. Casey made the Pro Bowl for the first time in 2015, but it’s time for more people to know his name and understand how great he really is.