2018 Big Ten Conference Leaders Turnover Margin - Games vs. Ranked 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 | Maryland | 5 | 4 | 5 | 9 | 2 | 2 | 4 | 5 | 1.00 |
| 2 | Ohio State | 4 | 2 | 4 | 6 | 2 | 2 | 4 | 2 | 0.50 |
| 3 | Michigan State | 5 | 4 | 4 | 8 | 4 | 4 | 8 | 0 | 0.00 |
| 3 | Northwestern | 4 | 4 | 1 | 5 | 1 | 4 | 5 | 0 | 0.00 |
| 3 | Iowa | 2 | 1 | 3 | 4 | 2 | 2 | 4 | 0 | 0.00 |
| 6 | Michigan | 5 | 2 | 3 | 5 | 1 | 5 | 6 | -1 | -0.20 |
| 6 | Wisconsin | 4 | 4 | 4 | 8 | 5 | 4 | 9 | -1 | -0.25 |
| 6 | Nebraska | 4 | 2 | 4 | 6 | 3 | 4 | 7 | -1 | -0.25 |
| 9 | Indiana | 4 | 2 | 5 | 7 | 5 | 4 | 9 | -2 | -0.50 |
| 10 | Purdue | 3 | 1 | 1 | 2 | 0 | 5 | 5 | -3 | -1.00 |
| 11 | Rutgers | 4 | 2 | 1 | 3 | 2 | 5 | 7 | -4 | -1.00 |
| 11 | Illinois | 3 | 1 | 2 | 3 | 1 | 6 | 7 | -4 | -1.33 |
| 13 | Penn State | 4 | 0 | 3 | 3 | 4 | 4 | 8 | -5 | -1.25 |
| 14 | Minnesota | 4 | 1 | 3 | 4 | 3 | 8 | 11 | -7 | -1.75 |