The Biggest San Francisco 49ers Blown Leads Of All Time

What is the biggest San Francisco 49ers blown lead of all time?

The largest blown lead in San Francisco 49ers history is 24 points. In week 12 of the 1977 season, the 49ers were leading 24-0 in the 3rd quarter against the Minnesota Vikings on Dec 4, 1977, and ultimately lost the game 27-28.

Biggest San Francisco 49ers Collapses

	Date	Opponent	Largest Lead		Final Score
1	Sun, Dec 4, 1977	@ Minnesota Vikings	24	24-0, 3rd	27-28
2	Sun, Nov 6, 1988	@ Phoenix Cardinals	23	23-0, 3rd	23-24
3	Sat, Dec 20, 2014	vs San Diego Chargers	21	28-7, 3rd	35-38
	Sun, Nov 23, 1969	@ New Orleans Saints	21	21-0, 2nd	38-43
	Sun, Oct 24, 1965	vs Minnesota Vikings	21	35-14, 3rd	41-42
6	Sun, Nov 30, 1958	@ Baltimore Colts	20	27-7, 3rd	27-35
	Sun, Dec 22, 1957	vs Detroit Lions	20	27-7, 3rd	27-31
8	Sun, Oct 28, 2001	@ Chicago Bears	19	28-9, 3rd	31-37
9	Sat, Dec 23, 1972	vs Dallas Cowboys	18	21-3, 2nd	28-30
10	Sun, Sep 14, 2014	vs Chicago Bears	17	17-0, 2nd	20-28
	Sun, Nov 14, 2004	vs Carolina Panthers	17	17-0, 2nd	27-37
	Mon, Dec 30, 2002	@ St. Louis Rams	17	20-3, 4th	20-31
	Sat, Dec 11, 1993	@ Atlanta Falcons	17	24-7, 4th	24-27
	Mon, Dec 1, 1986	vs New York Giants	17	17-0, 3rd	17-21
15	Sun, Sep 25, 2005	vs Dallas Cowboys	15	21-6, 2nd	31-34
16	Sun, Sep 30, 2018	@ Los Angeles Chargers	14	14-0, 1st	27-29
	Sun, Dec 11, 2016	vs New York Jets	14	17-3, 3rd	17-23
	Sun, Oct 23, 2016	vs Tampa Bay Buccaneers	14	14-0, 2nd	17-34
	Sun, Oct 2, 2016	vs Dallas Cowboys	14	14-0, 2nd	17-24
	Sun, Sep 18, 2011	vs Dallas Cowboys	14	14-0, 2nd	24-27
	Sun, Oct 3, 2010	@ Atlanta Falcons	14	14-0, 2nd	14-16
	Sun, Oct 2, 2005	@ Arizona Cardinals	14	14-0, 2nd	14-31
	Sun, Oct 17, 2004	@ New York Jets	14	14-0, 2nd	14-22
	Sat, Dec 27, 2003	vs Seattle Seahawks	14	14-0, 2nd	17-24
	Sun, Nov 20, 1983	@ Atlanta Falcons	14	14-0, 2nd	24-28
	Sun, Nov 12, 1967	@ Washington Redskins	14	14-0, 2nd	28-31
	Sun, Sep 25, 1960	vs New York Giants	14	14-0, 2nd	19-21
	Sun, Dec 13, 1959	vs Green Bay Packers	14	14-0, 2nd	14-36
	Sun, Oct 23, 1955	vs Chicago Bears	14	17-3, 2nd	23-34
	Sun, Oct 31, 1954	vs Chicago Bears	14	21-7, 3rd	27-31
31	Sun, Jan 7, 2024	vs Los Angeles Rams	13	20-7, 3rd	20-21
	Sun, Jan 2, 1983	vs Los Angeles Rams	13	20-7, 3rd	20-21
	Sun, Nov 9, 1980	@ Green Bay Packers	13	13-0, 2nd	16-23
	Sun, Nov 20, 1966	vs Philadelphia Eagles	13	34-21, 4th	34-35
35	Sun, Oct 28, 2018	@ Arizona Cardinals	12	15-3, 4th	15-18
	Sun, Dec 11, 2011	@ Arizona Cardinals	12	19-7, 3rd	19-21
	Sun, Sep 21, 2003	vs Cleveland Browns	12	12-0, 4th	12-13
38	Sun, Jan 1, 2017	vs Seattle Seahawks	11	14-3, 2nd	23-25
	Mon, Nov 10, 2008	@ Arizona Cardinals	11	14-3, 2nd	24-29
	Sun, Oct 20, 2002	@ New Orleans Saints	11	24-13, 4th	27-35
	Sun, Dec 10, 2000	vs New Orleans Saints	11	14-3, 3rd	27-31
	Mon, Oct 14, 1996	@ Green Bay Packers	11	17-6, 3rd	20-23
	Sun, Dec 24, 1995	@ Atlanta Falcons	11	21-10, 2nd	27-28
	Sun, Sep 13, 1992	vs Buffalo Bills	11	24-13, 3rd	31-34
	Sun, Nov 18, 1979	vs Denver Broncos	11	21-10, 2nd	28-38
	Sun, Sep 28, 1975	vs Los Angeles Rams	11	14-3, 3rd	14-23
	Sun, Nov 3, 1968	vs Cleveland Browns	11	14-3, 2nd	21-33
	Sun, Oct 31, 1965	vs Baltimore Colts	11	21-10, 2nd	28-34
	Sun, Oct 25, 1964	vs Minnesota Vikings	11	14-3, 2nd	22-27
	Sun, Dec 9, 1962	vs Green Bay Packers	11	21-10, 3rd	21-31
	Sun, Nov 6, 1955	@ Los Angeles Rams	11	14-3, 3rd	14-27
	Sun, Sep 24, 1950	vs Chicago Bears	11	14-3, 2nd	20-32

What is the biggest 4th quarter collapse in San Francisco 49ers history?

The largest lead the San Francisco 49ers have blown in the 4th quarter is 17 points, which they've done 3 times. The most recent 17 point blown lead in the 4th quarter was on Dec 30, 2002, when the 49ers were ahead 20-3 in the 4th quarter against the St. Louis Rams, and lost the game 20-31.

Biggest All Time San Francisco 49ers Blown Leads

What is the biggest San Francisco 49ers blown lead of all time?

Biggest San Francisco 49ers Collapses

What is the biggest 4th quarter collapse in San Francisco 49ers history?