James Cook has secured a four-year, $48 million contract extension. Is he one of the top RBs in guaranteed money?

Running back James Cook is cashing in on his career year with the Buffalo Bills. The two sides agreed to a four-year, $48 million extension, according to ESPN's Adam Schefter. The deal includes $30 million guaranteed.

Running back James Cook and the Bills have reached agreement on a four-year, $48 million contract extension that includes $30 million guaranteed, his agents told ESPN.