14 Wins, 15 Losses
| Date | Game Type | Upset Magnitude | |||
|---|---|---|---|---|---|
| 12/30/86 | Won | Mansfield 43 | Inchelium 38 | Non-league | 1.738 |
| 01/23/87 | Won | Mansfield W | Waterville L | League | 4.478 |
| 02/24/87 | Won | Mansfield 64 | Brewster 36 | Playoff | 13.531 |
| 12/19/87 | Won | Mansfield 52 | Bridgeport 48 | League | 8.507 |
| 01/30/88 | Lost | Mansfield 43 | Brewster 54 | League | 0.573 |
| 02/20/88 | Lost | Mansfield 41 | Brewster 44 | Playoff | 0.573 |
| 01/18/00 | Lost | Mansfield 36 | Soap Lake 41 | League | 10.111 |
| 01/12/01 | Lost | Mansfield 33 | Bridgeport 35 | Non-league | 1.286 |
| 12/01/01 | Won | Mansfield 62 | Entiat 48 | League | 3.226 |
| 01/08/02 | Lost | Mansfield 55 | Bridgeport 59 | League | 12.092 |
| 01/12/02 | Won | Mansfield 32 | Entiat 24 | League | 3.226 |
| 12/06/02 | Lost | Mansfield 44 | Bridgeport 46 | League | 6.274 |
| 12/12/02 | Won | Mansfield 46 | Lake Roosevelt 45 | Non-league | 4.700 |
| 12/17/02 | Lost | Mansfield 39 | Okanogan 46 | Non-league | 2.112 |
| 12/21/02 | Won | Mansfield 54 | Pateros 43 | League | 12.100 |
| 02/12/03 | Lost | Mansfield 48 | Bridgeport 60 | Playoff | 6.274 |
| 12/04/03 | Won | Mansfield 52 | Lake Roosevelt 50 | Non-league | 7.093 |
| 01/20/04 | Won | Mansfield 49 | Waterville 41 | League | 7.069 |
| 01/31/04 | Lost | Mansfield 47 | Manson 58 | League | 13.403 |
| 11/30/06 | Lost | Mansfield 41 | St. Michael's 48 | Non-league | 0.862 |
| 12/05/06 | Lost | Mansfield 29 | St. Michael's 32 | Non-league | 0.862 |
| 12/19/06 | Lost | Mansfield 42 | Thorp-Easton 44 | Non-league | 17.004 |
| 01/16/07 | Lost | Mansfield 52 | Wilson Creek 55 | League | 7.921 |
| 01/26/08 | Lost | Mansfield 38 | Wilson Creek 40 | League | 3.347 |
| 01/24/09 | Won | Mansfield 36 | Wilson Creek 29 | League | 8.928 |
| 02/19/09 | Won | Mansfield 42 | Wilson Creek 40 | Playoff | 8.928 |
| 12/11/09 | Lost | Mansfield 30 | Wilbur-Creston 31 | Non-league | 1.550 |
| 12/15/09 | Won | Mansfield 42 | Bridgeport 41 | Non-league | 17.042 |
| 01/29/10 | Won | Mansfield 35 | Wilson Creek 31 | League | 2.912 |
14 Wins, 13 Losses
| Date | Game Type | Upset Magnitude | |||
|---|---|---|---|---|---|
| 12/06/02 | Lost | Mansfield 59 | Bridgeport 70 | League | 14.045 |
| 12/07/02 | Lost | Mansfield 67 | Kittitas 77 | League | 5.259 |
| 01/04/03 | Lost | Mansfield 73 | Moses Lake Christian 80 | League | 6.017 |
| 01/31/03 | Lost | Mansfield 54 | Moses Lake Christian 55 | League | 6.017 |
| 02/01/03 | Lost | Mansfield 63 | Entiat 66 | League | 1.735 |
| 02/22/03 | Won | Mansfield 61 | Manson 46 | Playoff | 5.717 |
| 03/05/03 | Won | Mansfield 67 | Willapa Valley 54 | Playoff | 10.026 |
| 12/13/03 | Won | Mansfield 62 | Pateros 56 | League | 1.956 |
| 12/29/03 | Won | Mansfield 49 | Almira Coulee Hartline 45 | Non-league | 0.132 |
| 01/24/04 | Won | Mansfield 56 | Pateros 49 | League | 1.956 |
| 02/19/04 | Won | Mansfield 62 | Kittitas 51 | Playoff | 4.081 |
| 02/21/04 | Won | Mansfield 50 | Bridgeport 44 | Playoff | 4.128 |
| 01/15/05 | Lost | Mansfield 51 | Thorp-Easton 65 | League | 1.188 |
| 01/28/05 | Won | Mansfield 65 | Soap Lake 51 | League | 4.127 |
| 01/06/07 | Won | Mansfield 57 | Easton 55 | League | 28.503 |
| 01/27/07 | Won | Mansfield 71 | Wilson Creek 57 | League | 6.559 |
| 12/06/07 | Lost | Mansfield 29 | Cascade Christian (Wenatchee) 32 | Non-league | 21.620 |
| 01/09/09 | Lost | Mansfield 41 | Columbia Basin 46 | League | 2.901 |
| 02/19/09 | Lost | Mansfield 52 | Columbia Basin 54 | Playoff | 2.901 |
| 01/14/10 | Lost | Mansfield 42 | Cascade Christian (Wenatchee) 48 | League | 11.223 |
| 01/03/11 | Won | Mansfield 58 | Cascade Christian (Wenatchee) 47 | League | 7.913 |
| 01/18/11 | Won | Mansfield 55 | Wilbur-Creston 52 | Non-league | 2.133 |
| 02/15/11 | Lost | Mansfield 42 | Wilson Creek 43 | Playoff | 4.505 |
| 12/06/11 | Lost | Mansfield 42 | Wilbur-Creston 44 | Non-league | 0.630 |
| 12/22/11 | Won | Mansfield 49 | Waterville 48 | Non-league | 1.368 |
| 12/27/11 | Won | Mansfield 51 | Waterville 34 | Non-league | 1.368 |
| 01/24/12 | Lost | Mansfield 37 | Columbia Basin 56 | League | 6.273 |