Four 49ers coaches—Dick Nolan, Bill Walsh, George Seifert, and Jim Harbaugh—have been named coach of the year by at least one major news organization. Walsh, Jack Christiansen and Mike Singletary are the only 49ers coaches currently in the Pro Football Hall of Fame. Walsh was selected for his coaching contributions. Singletary and Christiansen were voted into the Hall of Fame primarily for their defensive play. Four times in 49ers history has there been an "interim" head coach. Three games into the 1963 season, coach Red Hickey resigned and was replaced by Jack Christiansen. Christiansen coached the 49ers to a 2–9 record in the remainder of the season and came back to coach the team for four more years. In 1978, Pete McCulley was fired after coaching the 49ers to a 1–8 record. He was replaced by offensive coordinatorFred O'Connor, who was himself fired after leading the 49ers to one win in their final seven games. After a 2–5 start to the 2008 season, Mike Nolan was fired and replaced by Mike Singletary, who finished the season 5–4 and became the official head coach following that season. After a 5–10 start to the 2010 season, Mike Singletary was fired and replaced by Jim Tomsula for the final 49ers game of the 2010 season.Stanford University head coach Jim Harbaugh succeeded Tomsula as head coach in January 2011, and led the franchise to the NFC Championship Game, where the 49ers lost in overtime to the New York Giants. The following season, the 49ers reached Super Bowl XLVII, where they faced off against the Baltimore Ravens, coached by Jim's older brother John Harbaugh. The 49ers trailed by as many as 22 points during the game, but ultimately lost 34–31 to the Ravens; the 49ers losing a Super Bowl for the first time.
c On September 30, 1963, three games into the season, coach Red Hickey resigned and was replaced by Jack Christiansen. Christiansen coached the 49ers to two wins in the 11 remaining games in the season. He coached the 49ers for another four seasons.
e Midway through the 2008 season, Mike Nolan was fired after leading the 49ers to a 2–5 record. He was replaced by his assistant head coach of defense, Mike Singletary.
f Before the final game of the 2010 season, Mike Singletary was fired after leading the 49ers to a 5–10 record. He was replaced by his defensive line coach, Jim Tomsula. Following the season, Tomsula returned to his defensive line coaching position and Jim Harbaugh was hired as the new head coach.