| 1 | A | B | C | D | E |
| --- | --- | --- | --- | --- | --- |
| 2 | 2009 Pacific-10 Conference football season - Pac-10 vs. BCS matchups |  |  |  |  |
| 3 | Date | Visitor | Home | Winner | Notes |
| 4 | September 5 | LSU | Washington | LSU | - |
| 5 | September 5 | Maryland | Cal | Cal | - |
| 6 | September 12 | UCLA | Tennessee | UCLA | UCLA's second straight win against Tennessee |
| 7 | September 12 | USC | Ohio State | USC | USC won with a late touchdown |
| 8 | September 12 | Purdue | Oregon | Oregon | - |
| 9 | September 19 | Arizona | Iowa | Iowa | - |
| 10 | September 19 | Cal | Minnesota | Cal | - |
| 11 | September 19 | Kansas State | UCLA | UCLA | - |
| 12 | September 19 | Cincinnati | Oregon State | Cincinnati | Oregon State's first non-conference home loss since 1996. |
| 13 | September 26 | Arizona State | Georgia | Georgia | - |
| 14 | October 3 | Washington | Notre Dame | Notre Dame | Overtime |
| 15 | October 17 | USC | Notre Dame | USC | USC's eighth consecutive win over Notre Dame |
| 16 | October 31 | Washington State | Notre Dame | Notre Dame | Played at the Alamodome in San Antonio, Texas |
| 17 | November 28 | Notre Dame | Stanford | Stanford | Stanford's first win over Notre Dame since 2001 |

Question: When did UCLA defeat Tennessee?
Answer: On September 12, 2009, UCLA defeated Tennessee.