The San Francisco 49ers season was the franchise's 57th season in the National Football League.
The team entered their 2003 season attempting to improve upon their 10–6 output from the previous year. This was the first season under head coach Dennis Erickson, whose hiring was highly controversial due to the way the coaching change was handled. The 49ers failed to surpass their 2002 record and finished the season 7–9 by losing six close games.
It was the final season that noted 49ers Terrell Owens, Garrison Hearst, Tai Streets, Ron Stone, and Jeff Garcia spent with the team.
Offseason
NFL Draft
Personnel
Staff
Roster
Regular season
Schedule
Week 1: vs. Chicago Bears
The 49ers started the season off strongly, defeating the Bears 49–7. The game was close in the second quarter, with the 49ers leading 10–7, however, the Bears' defense gave way to the 49ers' offense who scored 39 unanswered points. The Bears were also plagued with turnovers; the team lost two fumbles and quarterback Kordell Stewart tossed three interceptions. The 49ers’ offensive line performed exceptionally well, as quarterback Jeff Garcia was never sacked during the course of the game.
Week 2: at St. Louis Rams
Coming off of a blowout, the 49ers played a tight match against the division rivals St. Louis Rams. It was a back-and-forth game, with the lead changing hands four times. The 49ers scored a game-tying touchdown late in the fourth quarter with a pass to Terrell Owens. In overtime, the Rams' Jeff Wilkins kicked a field goal to win the game, the team overcoming their four turnovers. The loss meant the 49ers started the season 1–1.
Week 3: vs. Cleveland Browns
In a low-scoring contest, the 49ers lost in a squeaker. After a scoreless first quarter, the 49ers struck first, however, they could not get into the end zone, scoring only four field goals. However, it appeared it would be sufficient; the 49ers led 12–0 in the final quarter. This would not be the case, though, as Browns’ quarterback Kelly Holcomb went on to throw two touchdown passes. Losing dropped the 49ers to 1–2.
Week 4: at Minnesota Vikings
Playing against the undefeated Vikings, the 49ers were unable to keep pace with their opponent. Scoring only in the final minutes of the fourth quarter, the 49ers were, at one point, behind 35–0. Several times the 49ers came within striking distance, however, three interceptions sealed their fate. The 49ers lost their third consecutive game and fell to 1–3.
Week 5: vs. Detroit Lions
Attempting to snap a three-game losing streak, the 49ers hosted the Detroit Lions, who were led by former head coach Steve Mariucci. A game riddled with errors, the 49ers fumbled three times (recovery each time), Jeff Garcia threw an interception, and Joey Harrington tossed two. The Lions never led, with the 49ers opening up a 17–0 lead in the second quarter. With their first win since the season opener, the 49ers moved up to 2–3.
Week 6: at Seattle Seahawks
For the second time in four games, the 49ers lost by a one-point differential. Playing against the division rival Seahawks, the 49ers fell behind 17–0 before halftime and had to play catch up in the second half. Slowly closing the gap, the 49ers scored 19 straight points to take the lead 19–17. However, the defense was unable to stop the Seahawks' 2-minute drill as Seattle's team drove into field goal range and scored the game-winning field goal off the foot of kicker Josh Brown and on the final drive of the game, Garrison Hearst fumbled the ball away at their own 43-yard-line to seal the loss. With the loss, the 49ers fell to 2–4.
Week 7: vs. Tampa Bay Buccaneers
Hosting the defending Super Bowl champions, the Tampa Bay Buccaneers, the 49ers got their third win of the season, knocking off the Buccaneers 24–7. The 49ers led the entire game and statistically dominated on both sides of the ball, both scoring often and forcing turnovers. Both teams were able to score touchdowns on passes of . With the victory, the 49ers moved to 3–4 on the season.