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 | Attendance |
| --- | --- | --- | --- | --- | --- |
| September 15 | Minnesota | 3 | Ohio Stadium • Columbus, OH | W56-7 | 86,005 |
| September 29 | TCU | 3 | Ohio Stadium • Columbus, OH | W37-3 | 87,439 |
| October 6 | Washington State | 1 | Ohio Stadium • Columbus, OH | W27-3 | 87,425 |
| October 13 | at Wisconsin | 1 | Camp Randall Stadium • Madison, WI | W24-0 | 77,413 |
| October 20 | at Indiana | 1 | Memorial Stadium • Bloomington, IN | W37-7 | 53,183 |
| October 27 | Northwestern | 1 | Ohio Stadium • Columbus, OH | W60-0 | 87,453 |
| November 3 | at Illinois | 1 | Memorial Stadium • Champaign, IL | W30-0 | 60,707 |
| November 10 | Michigan State | 1 | Ohio Stadium • Columbus, OH | W35-0 | 87,600 |
| November 17 | Iowa | 1 | Ohio Stadium • Columbus, OH | W55-13 | 87,447 |
| November 24 | at 4 Michigan | 1 | Michigan Stadium • Ann Arbor, MI | T 10–10 | 105,223 |
| January 1 | vs. 7 USC | 4 | Rose Bowl • Pasadena, CA ( Rose Bowl ) | W42-21 | 105,267 |
| *Non-conference game. #Rankings from AP Poll . | *Non-conference game. #Rankings from AP Poll . | *Non-conference game. #Rankings from AP Poll . | *Non-conference game. #Rankings from AP Poll . | *Non-conference game. #Rankings from AP Poll . | *Non-conference game. #Rankings from AP Poll . |
Question:
Who was the opponent when the attendance was 87,453?
Answer:
Northwestern