Ok, after some deducing through some old articles I think it's 61 including the practice squad
http://www.kcchiefs.com/news_article...RB6JAC2PARX84W
Quote:
Kansas City Chiefs President Carl Peterson announced on Wednesday that the club has agreed to terms of a three-year deal with S Clint Finley. He was promoted to the team’s 53-man roster from the practice squad
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So my understanding from this is that it's 53, not including the practice squad. I know there's a place where all the NFL rules can be found. I just can't find it right now