2018 Big Ten Conference Leaders Turnover Margin - Games in August/September Only through 01/07/2019
| Name | G | Fum. Gain | Int. Gain | Total Gain | Fum. Lost | Int. Lost | Total Lost | Margin | Margin/G | |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Maryland | 4 | 2 | 6 | 8 | 1 | 2 | 3 | 5 | 1.25 |
| 1 | Ohio State | 5 | 4 | 4 | 8 | 1 | 2 | 3 | 5 | 1.00 |
| 3 | Illinois | 4 | 2 | 7 | 9 | 2 | 2 | 4 | 5 | 1.25 |
| 3 | Wisconsin | 4 | 4 | 4 | 8 | 2 | 2 | 4 | 4 | 1.00 |
| 3 | Michigan | 5 | 1 | 4 | 5 | 1 | 3 | 4 | 1 | 0.20 |
| 6 | Northwestern | 4 | 1 | 3 | 4 | 1 | 4 | 5 | -1 | -0.25 |
| 7 | Penn State | 5 | 2 | 5 | 7 | 4 | 2 | 6 | 1 | 0.20 |
| 7 | Iowa | 4 | 3 | 2 | 5 | 2 | 4 | 6 | -1 | -0.25 |
| 9 | Indiana | 5 | 5 | 5 | 10 | 2 | 5 | 7 | 3 | 0.60 |
| 9 | Minnesota | 4 | 2 | 4 | 6 | 4 | 3 | 7 | -1 | -0.25 |
| 11 | Purdue | 5 | 0 | 7 | 7 | 4 | 4 | 8 | -1 | -0.20 |
| 11 | Michigan State | 4 | 0 | 7 | 7 | 3 | 5 | 8 | -1 | -0.25 |
| 13 | Nebraska | 4 | 1 | 2 | 3 | 4 | 5 | 9 | -6 | -1.50 |
| 14 | Rutgers | 5 | 3 | 4 | 7 | 4 | 9 | 13 | -6 | -1.20 |