Preseason
| Date | Opponent | Result | Host Stadium | NFL Recap | Attendance |
|---|---|---|---|---|---|
| August 11, 2005 | at Green Bay Packers | L 7 – 10 | Lambeau Field | Gamebook |
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| August 21, 2005 | St. Louis Rams | W 36 – 21 | Qualcomm Stadium | Gamebook |
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| August 26, 2005 | at Minnesota Vikings | L 16 – 19 | Hubert H. Humphrey Metrodome | Gamebook |
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| September 1, 2005 | San Francisco 49ers | W 28 – 24 | Qualcomm Stadium | Gamebook |
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Read more about this topic: 2005 San Diego Chargers Season