The Chiefs rewarded Crennel by removing the interim tag from his title in January. But if we use recent history as a judge, Crennel is facing an uphill challenge in 2012.
According to the Elias Sports Bureau (via ESPN.com), the last coach to lead his team to a winning record in his first year as the permanent coach after being the interim coach was Art Shell in 1990.
Shell led the Raiders to a 12-4 mark during the days of "Roseanne" and Vanilla Ice, but he is an outlier. No other coach has managed nine regular-season wins -- Jason Garrett (2011) and Mike Singletary (2009) came the closest with middling 8-8 campaigns with the Dallas Cowboys and San Francisco 49ers, respectively.
So what do the numbers tell us? For one, "Win one for the Gipper!" inspiration for a new coach only goes so far. For another, interim coaches are usually saddled with the same subpar roster that contributed to the downfall of the previous regime.