Nov 27, 2014; Santa Clara, CA, USA; San Francisco 49ers coach Jim Nov 27, 2014; Santa Clara, CA, USA; San Francisco 49ers coach Jim Harbaugh reacts against the Seattle Seahawks in the Thanksgiving game at Levi’s Stadium. Mandatory Credit: Kirby Lee-USA TODAY Sports The San Francisco 49ers are fortunate enough to have employed some amazing head coaches since being formed in 1946.