Mike Singletary

The menacing middle linebacker's routine didn't play as well from the sideline. Pictured here while serving as the Ravens linebacker coach, he went on to become the 49ers' head coach for three seasons, in which he went 18-22. His "cannot play with them, cannot win with them, cannot coach with them" rant towards Vernon Davis was legendary, but it wasn't until after he was fired that San Francisco returned to an NFC power.
Kenneth K. Lam, Baltimore Sun
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