Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Date | Opponent# | Rank# | Site | Result |
| --- | --- | --- | --- | --- |
| September 12 | at Colorado* |  | Folsom Field • Boulder, CO | W 44–6 |
| September 19 | at #5 Ohio State* |  | Ohio Stadium • Columbus, OH | L 14–24 |
| September 26 | San Diego State* |  | Autzen Stadium • Eugene, OR | W 25–20 |
| October 3 | #16 Washington |  | Autzen Stadium • Eugene, OR (Rivalry) | W 29–22 |
| October 10 | USC |  | Autzen Stadium • Eugene, OR | W 34–27 |
| October 17 | at #9 UCLA | #16 | Rose Bowl • Pasadena, CA | L 10–41 |
| October 24 | at Stanford |  | Stanford Stadium • Stanford, CA | L 10–13 |
| October 31 | California |  | Autzen Stadium • Eugene, OR | L 6–20 |
| November 7 | at Arizona State |  | Sun Devil Stadium • Tempe, AZ | L 17–37 |
| November 14 | at Washington State |  | Martin Stadium • Pullman, WA | W 31–17 |
| November 21 | Oregon State |  | Autzen Stadium • Eugene, OR (Civil War) | W 44–0 |
Question:
who was their last opponent of the season?
Answer:
Oregon State