2018 Big Ten Conference Leaders Turnover Margin - Games vs. Unranked Teams Only (AP Poll) through 01/07/2019
| Name | G | Fum. Gain | Int. Gain | Total Gain | Fum. Lost | Int. Lost | Total Lost | Margin | Margin/G | |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Michigan | 8 | 4 | 8 | 12 | 2 | 4 | 6 | 6 | 0.75 |
| 1 | Northwestern | 10 | 10 | 11 | 21 | 2 | 12 | 14 | 7 | 0.70 |
| 3 | Indiana | 8 | 11 | 8 | 19 | 3 | 9 | 12 | 7 | 0.88 |
| 4 | Michigan State | 8 | 5 | 10 | 15 | 4 | 10 | 14 | 1 | 0.13 |
| 5 | Iowa | 11 | 6 | 17 | 23 | 5 | 9 | 14 | 9 | 0.82 |
| 5 | Wisconsin | 9 | 7 | 10 | 17 | 5 | 10 | 15 | 2 | 0.22 |
| 5 | Rutgers | 8 | 4 | 8 | 12 | 5 | 17 | 22 | -10 | -1.25 |
| 8 | Purdue | 10 | 2 | 10 | 12 | 6 | 8 | 14 | -2 | -0.20 |
| 9 | Maryland | 7 | 1 | 13 | 14 | 7 | 3 | 10 | 4 | 0.57 |
| 9 | Ohio State | 10 | 10 | 7 | 17 | 7 | 6 | 13 | 4 | 0.40 |
| 11 | Minnesota | 9 | 9 | 8 | 17 | 8 | 6 | 14 | 3 | 0.33 |
| 11 | Nebraska | 8 | 7 | 7 | 14 | 8 | 7 | 15 | -1 | -0.13 |
| 13 | Penn State | 9 | 7 | 10 | 17 | 9 | 4 | 13 | 4 | 0.44 |
| 13 | Illinois | 9 | 4 | 13 | 17 | 9 | 8 | 17 | 0 | 0.00 |