Not everyone pays much attention to interior defenders, but fans should take notice. PFF ranks the top five guys inside, with praise for Ndamukong Suh, Aaron Donald, Kawann Short, and J.J. Watt.
Top 5 NFL interior defenders this season

Miami Dolphins defensive tackle Ndamukong Suh (93) warms up before an NFL football game against the Washington Redskins, Sunday, Sept. 13, 2015, in Landover, Md. (AP Photo/Mark Tenally)
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