4 big reasons the Steelers defense is so good now

Why has the Steelers defense improved so much this season?

Surprising Steven Nelson

Mandatory Credit: Philip G. Pavely-USA TODAY Sports

When the Steelers signed Nelson as a free agent, many Chiefs fans were glad to be rid of him. But all Nelson has done since coming to Pittsburgh is solidify the cornerback depth chart and pair up with Joe Haden as one of the best starting combos in the AFC. After missing on Artie Burns in the draft, Nelson has been a welcome addition.

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