Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
2009 Pacific-10 Conference football season
Table title:
Pac-10 vs. BCS matchups
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Date </th><th colspan=1 rowspan=1 > Visitor </th><th colspan=1 rowspan=1 > Home </th><th colspan=1 rowspan=1 > Winner </th><th colspan=1 rowspan=1 > Notes </th></tr>
<tr> <td colspan=1 rowspan=1 > September 5 </td><td colspan=1 rowspan=1 > LSU </td><td colspan=1 rowspan=1 > Washington </td><td colspan=1 rowspan=1 > LSU </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > September 5 </td><td colspan=1 rowspan=1 > Maryland </td><td colspan=1 rowspan=1 > Cal </td><td colspan=1 rowspan=1 > Cal </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > September 12 </td><td colspan=1 rowspan=1 > UCLA </td><td class="highlighted"  colspan=1 rowspan=1 > Tennessee </td><td class="highlighted"  colspan=1 rowspan=1 > UCLA </td><td colspan=1 rowspan=1 > UCLA's second straight win against Tennessee </td></tr>
<tr> <td colspan=1 rowspan=1 > September 12 </td><td colspan=1 rowspan=1 > USC </td><td colspan=1 rowspan=1 > Ohio State </td><td colspan=1 rowspan=1 > USC </td><td colspan=1 rowspan=1 > USC won with a late touchdown </td></tr>
<tr> <td colspan=1 rowspan=1 > September 12 </td><td colspan=1 rowspan=1 > Purdue </td><td colspan=1 rowspan=1 > Oregon </td><td colspan=1 rowspan=1 > Oregon </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > September 19 </td><td colspan=1 rowspan=1 > Arizona </td><td colspan=1 rowspan=1 > Iowa </td><td colspan=1 rowspan=1 > Iowa </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > September 19 </td><td colspan=1 rowspan=1 > Cal </td><td colspan=1 rowspan=1 > Minnesota </td><td colspan=1 rowspan=1 > Cal </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > September 19 </td><td colspan=1 rowspan=1 > Kansas State </td><td colspan=1 rowspan=1 > UCLA </td><td colspan=1 rowspan=1 > UCLA </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > September 19 </td><td colspan=1 rowspan=1 > Cincinnati </td><td colspan=1 rowspan=1 > Oregon State </td><td colspan=1 rowspan=1 > Cincinnati </td><td colspan=1 rowspan=1 > Oregon State's first non-conference home loss since 1996. </td></tr>
<tr> <td colspan=1 rowspan=1 > September 26 </td><td colspan=1 rowspan=1 > Arizona State </td><td colspan=1 rowspan=1 > Georgia </td><td colspan=1 rowspan=1 > Georgia </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > October 3 </td><td colspan=1 rowspan=1 > Washington </td><td colspan=1 rowspan=1 > Notre Dame </td><td colspan=1 rowspan=1 > Notre Dame </td><td colspan=1 rowspan=1 > Overtime </td></tr>
<tr> <td colspan=1 rowspan=1 > October 17 </td><td colspan=1 rowspan=1 > USC </td><td colspan=1 rowspan=1 > Notre Dame </td><td colspan=1 rowspan=1 > USC </td><td colspan=1 rowspan=1 > USC's eighth consecutive win over Notre Dame </td></tr>
<tr> <td colspan=1 rowspan=1 > October 31 </td><td colspan=1 rowspan=1 > Washington State </td><td colspan=1 rowspan=1 > Notre Dame </td><td colspan=1 rowspan=1 > Notre Dame </td><td colspan=1 rowspan=1 > Played at the Alamodome in San Antonio, Texas </td></tr>
<tr> <td colspan=1 rowspan=1 > November 28 </td><td colspan=1 rowspan=1 > Notre Dame </td><td colspan=1 rowspan=1 > Stanford </td><td colspan=1 rowspan=1 > Stanford </td><td colspan=1 rowspan=1 > Stanford's first win over Notre Dame since 2001 </td></tr>
</table>
Question:
When did UCLA defeat Tennessee?
Answer:
On September 12, 2009, UCLA defeated Tennessee.