Mike Singletary
Singletary later pursued a career as a coach, first as a linebackers coach for the Baltimore Ravens, then as the linebackers coach for the San Francisco 49ers. In 2008, the 49ers promoted Singletary to the head coaching position after previous head coach Mike Nolan was fired during the season, and he remained in that position until he was fired after the 49ers were eliminated from playoff contention with one game remaining in the 2010 season. He has also coached for the Los Angeles Rams, the Memphis Express of the now-defunct Alliance of American Football (AAF), and a brief two-season stint as the head coach of a high school team. Provided by Wikipedia
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