57 Wins, 42 Losses
| Date | Game Type | Upset Magnitude | |||
|---|---|---|---|---|---|
| 12/17/86 | Won | Foss 44 | Lincoln 43 | League | 20.108 |
| 01/22/88 | Lost | Foss 40 | Wilson 50 | League | 14.288 |
| 02/05/88 | Lost | Foss 37 | Bellarmine Prep 48 | League | 2.840 |
| 11/29/88 | Lost | Foss 44 | Kentridge 57 | Non-league | 0.241 |
| 12/10/88 | Lost | Foss 48 | Rogers (Puyallup) 54 | Non-league | 8.308 |
| 01/04/89 | Won | Foss 37 | Lincoln 35 | League | 2.071 |
| 01/27/89 | Won | Foss 30 | Lincoln 28 | League | 2.071 |
| 11/28/89 | Lost | Foss 44 | Kent-Meridian 52 | Non-league | 5.102 |
| 12/05/89 | Lost | Foss 48 | Puyallup 50 | Non-league | 0.461 |
| 01/05/90 | Lost | Foss 43 | Wilson 62 | League | 5.858 |
| 02/07/90 | Lost | Foss 40 | Wilson 45 | League | 5.858 |
| 02/21/90 | Lost | Foss 39 | Bethel 45 | Playoff | 3.131 |
| 11/30/90 | Lost | Foss 32 | Kentridge 58 | Non-league | 0.766 |
| 12/03/90 | Lost | Foss 37 | Decatur 42 | Non-league | 10.355 |
| 12/12/90 | Won | Foss 56 | North Thurston 49 | League | 3.761 |
| 01/04/91 | Won | Foss 45 | South Kitsap 40 | League | 2.072 |
| 02/06/91 | Won | Foss 32 | South Kitsap 29 | League | 2.072 |
| 12/20/91 | Won | Foss 43 | Kentridge 40 | Non-league | 8.757 |
| 01/15/92 | Won | Foss 35 | Timberline 32 | League | 3.803 |
| 01/31/92 | Lost | Foss 40 | Mount Tahoma 49 | League | 8.769 |
| 12/18/92 | Won | Foss 46 | South Kitsap 22 | League | 4.339 |
| 02/05/93 | Won | Foss 48 | Timberline 39 | League | 6.805 |
| 12/01/93 | Lost | Foss 40 | Spanaway Lake 56 | Non-league | 1.990 |
| 12/14/93 | Lost | Foss 49 | Bellarmine Prep 57 | League | 10.088 |
| 01/14/94 | Won | Foss 40 | South Kitsap 38 | League | 16.093 |
| 01/26/94 | Lost | Foss 38 | Bellarmine Prep 42 | League | 10.088 |
| 01/28/94 | Won | Foss 37 | Wilson 35 | League | 10.621 |
| 02/03/94 | Lost | Foss 30 | Mount Tahoma 35 | League | 14.730 |
| 02/09/94 | Lost | Foss 41 | Lincoln 49 | League | 7.281 |
| 02/15/94 | Won | Foss 43 | South Kitsap 37 | League | 16.093 |
| 12/05/94 | Lost | Foss 53 | Decatur 55 | Non-league | 7.156 |
| 12/13/94 | Lost | Foss 40 | Bellarmine Prep 42 | League | 14.765 |
| 01/27/95 | Won | Foss 44 | Wilson 36 | League | 1.333 |
| 02/20/95 | Won | Foss 37 | Wilson 35 | Playoff | 1.333 |
| 03/08/95 | Won | Foss 37 | Marysville-Pilchuck 33 | Playoff | 5.641 |
| 03/09/95 | Won | Foss 49 | Snohomish 35 | Playoff | 1.720 |
| 02/24/96 | Lost | Foss 62 | Enumclaw 68 | Playoff | 4.039 |
| 03/06/96 | Won | Foss 64 | Prairie 59 | Playoff | 1.853 |
| 01/31/97 | Lost | Foss 41 | South Kitsap 50 | League | 3.096 |
| 03/12/97 | Won | Foss 65 | Tumwater 47 | Playoff | 10.302 |
| 03/13/97 | Won | Foss 46 | Auburn 36 | Playoff | 5.846 |
| 01/09/98 | Lost | Foss 54 | Bellarmine Prep 59 | League | 2.243 |
| 01/16/98 | Won | Foss 59 | South Kitsap 58 | League | 4.582 |
| 02/12/98 | Won | Foss 61 | South Kitsap 60 | League | 4.582 |
| 03/11/98 | Lost | Foss 53 | Kennewick 63 | Playoff | 6.698 |
| 03/12/98 | Lost | Foss 46 | Columbia River 63 | Playoff | 8.337 |
| 01/07/00 | Won | Foss 59 | Olympia 53 | League | 2.417 |
| 02/01/00 | Won | Foss 46 | Gig Harbor 32 | League | 4.566 |
| 02/11/00 | Lost | Foss 43 | Wilson 55 | League | 8.452 |
| 02/15/00 | Won | Foss 51 | Olympia 49 | League | 2.417 |
| 02/23/00 | Won | Foss 45 | Kent-Meridian 42 | Playoff | 14.379 |
| 02/29/00 | Won | Foss 60 | Olympia 47 | Playoff | 2.417 |
| 01/26/01 | Won | Foss 55 | Olympia 50 | League | 7.599 |
| 02/02/01 | Won | Foss 48 | Bellarmine Prep 46 | League | 8.924 |
| 02/13/01 | Lost | Foss 61 | Mount Tahoma 64 | Playoff | 5.905 |
| 12/05/01 | Lost | Foss 54 | Olympic 56 | Non-league | 10.687 |
| 01/18/02 | Lost | Foss 42 | Wilson 64 | League | 3.785 |
| 12/03/02 | Won | Foss 43 | Rogers (Puyallup) 41 | Non-league | 1.680 |
| 12/18/02 | Lost | Foss 47 | Wilson 54 | League | 4.820 |
| 12/20/02 | Won | Foss 57 | Bellarmine Prep 53 | League | 3.506 |
| 01/08/03 | Won | Foss 65 | Mount Tahoma 61 | League | 2.312 |
| 01/15/03 | Won | Foss 46 | Lincoln 45 | League | 4.190 |
| 01/29/03 | Won | Foss 60 | Bellarmine Prep 56 | League | 3.506 |
| 01/31/03 | Won | Foss 65 | Mount Tahoma 63 | League | 2.312 |
| 02/14/03 | Won | Foss 48 | Olympia 45 | League | 5.378 |
| 01/09/04 | Won | Foss 55 | Capital 46 | League | 2.677 |
| 01/14/04 | Won | Foss 51 | Lincoln 43 | League | 5.098 |
| 02/17/04 | Won | Foss 46 | Lincoln 41 | Playoff | 5.098 |
| 02/21/04 | Lost | Foss 37 | Gig Harbor 52 | Playoff | 6.454 |
| 03/12/04 | Lost | Foss 52 | Gig Harbor 60 | Playoff | 6.454 |
| 12/15/04 | Lost | Foss 44 | Olympia 45 | League | 12.994 |
| 12/29/04 | Lost | Foss 32 | Battle Ground 33 | Non-league | 5.835 |
| 01/14/05 | Won | Foss 63 | Mount Tahoma 50 | League | 4.391 |
| 02/08/05 | Won | Foss 89 | Mount Tahoma 86 | League | 4.391 |
| 02/19/05 | Lost | Foss 47 | Gig Harbor 59 | Playoff | 3.943 |
| 02/25/05 | Won | Foss 60 | Kentlake 50 | Playoff | 4.410 |
| 03/05/05 | Won | Foss 54 | Auburn Riverside 43 | Playoff | 2.624 |
| 12/07/05 | Lost | Foss 63 | Port Angeles 67 | Non-league | 6.069 |
| 12/14/05 | Lost | Foss 51 | Olympia 57 | League | 2.360 |
| 01/20/06 | Lost | Foss 35 | Olympia 41 | League | 2.360 |
| 02/04/06 | Won | Foss 60 | Franklin 53 | Non-league | 0.990 |
| 01/29/07 | Lost | Foss 49 | Central Kitsap 70 | League | 3.761 |
| 02/09/07 | Won | Foss 53 | Bellarmine Prep 49 | Playoff | 3.746 |
| 02/14/07 | Lost | Foss 54 | Rogers (Puyallup) 63 | Playoff | 4.952 |
| 01/17/08 | Won | Foss 59 | Olympia 53 | League | 0.231 |
| 01/26/08 | Lost | Foss 50 | Kentlake 53 | Non-league | 0.549 |
| 02/02/08 | Lost | Foss 62 | South Kitsap 68 | League | 5.676 |
| 02/14/08 | Won | Foss 56 | Tahoma 49 | Playoff | 0.314 |
| 02/20/08 | Won | Foss 60 | Olympia 53 | Playoff | 0.231 |
| 02/22/08 | Lost | Foss 62 | Rogers (Puyallup) 65 | Playoff | 5.144 |
| 01/23/09 | Won | Foss 54 | Central Kitsap 50 | League | 0.326 |
| 02/03/09 | Won | Foss 33 | Shelton 28 | League | 2.829 |
| 02/13/09 | Won | Foss 53 | Central Kitsap 33 | Playoff | 0.326 |
| 12/29/09 | Won | Foss 51 | Curtis 36 | Non-league | 0.793 |
| 01/30/12 | Won | Foss 42 | Capital 37 | League | 9.241 |
| 11/28/12 | Won | Foss 36 | Ingraham 33 | Non-league | 8.536 |
| 02/06/13 | Won | Foss 29 | Shelton 27 | League | 7.385 |
| 01/03/20 | Won | Foss 53 | Steilacoom 51 | League | 8.497 |
| 01/28/20 | Won | Foss 60 | Steilacoom 49 | League | 8.497 |
47 Wins, 53 Losses
| Date | Game Type | Upset Magnitude | |||
|---|---|---|---|---|---|
| 12/05/02 | Lost | Foss 59 | Puyallup 67 | Non-league | 3.386 |
| 12/18/02 | Won | Foss 80 | Wilson 72 | League | 1.373 |
| 12/20/02 | Won | Foss 63 | Bellarmine Prep 59 | League | 0.349 |
| 01/03/03 | Lost | Foss 61 | Lynden 63 | Non-league | 6.766 |
| 01/08/03 | Won | Foss 73 | Mount Tahoma 64 | League | 5.023 |
| 01/17/03 | Won | Foss 74 | Capital 65 | League | 0.225 |
| 01/29/03 | Won | Foss 88 | Bellarmine Prep 84 | League | 0.349 |
| 02/07/03 | Won | Foss 77 | Lincoln 53 | League | 3.881 |
| 02/13/03 | Won | Foss 72 | Olympia 63 | League | 1.749 |
| 02/22/03 | Lost | Foss 78 | Shelton 89 | Playoff | 5.896 |
| 12/02/03 | Won | Foss 55 | Puyallup 47 | Non-league | 9.580 |
| 12/10/03 | Lost | Foss 49 | Bremerton 69 | Non-league | 0.860 |
| 01/23/04 | Won | Foss 65 | Olympia 60 | League | 4.407 |
| 01/28/04 | Lost | Foss 66 | Wilson 73 | League | 5.179 |
| 01/30/04 | Won | Foss 46 | Bellarmine Prep 43 | League | 4.800 |
| 02/06/04 | Lost | Foss 51 | Lincoln 54 | League | 3.940 |
| 02/17/04 | Won | Foss 65 | Olympia 61 | Playoff | 4.407 |
| 12/11/04 | Won | Foss 70 | Mark Morris 64 | Non-league | 5.218 |
| 02/02/05 | Lost | Foss 47 | Capital 60 | League | 11.896 |
| 12/07/05 | Lost | Foss 63 | Port Angeles 64 | Non-league | 11.504 |
| 01/11/06 | Won | Foss 67 | Bellarmine Prep 62 | League | 1.343 |
| 01/20/06 | Lost | Foss 33 | Olympia 41 | League | 2.739 |
| 01/27/06 | Lost | Foss 53 | Lincoln 56 | League | 6.919 |
| 02/03/06 | Won | Foss 55 | Bellarmine Prep 40 | League | 1.343 |
| 02/08/06 | Won | Foss 58 | Capital 53 | League | 1.492 |
| 03/01/06 | Lost | Foss 48 | Evergreen (Vancouver) 51 | Playoff | 1.454 |
| 01/05/07 | Lost | Foss 83 | Stadium 90 | League | 2.866 |
| 01/17/07 | Won | Foss 78 | Bellarmine Prep 65 | League | 3.461 |
| 01/19/07 | Lost | Foss 61 | Olympia 76 | League | 2.131 |
| 01/20/07 | Won | Foss 74 | South Kitsap 55 | League | 7.330 |
| 02/03/07 | Won | Foss 55 | Mount Tahoma 50 | League | 6.751 |
| 11/30/07 | Lost | Foss 52 | Puyallup 56 | Non-league | 10.312 |
| 12/05/07 | Lost | Foss 57 | Gig Harbor 62 | League | 1.757 |
| 12/20/07 | Lost | Foss 57 | Central Kitsap 68 | League | 3.877 |
| 12/29/07 | Lost | Foss 36 | Puyallup 38 | Non-league | 10.312 |
| 01/31/08 | Won | Foss 72 | Lincoln 53 | League | 3.572 |
| 02/27/08 | Won | Foss 53 | Prairie 51 | Playoff | 3.733 |
| 01/09/09 | Lost | Foss 53 | Bellarmine Prep 57 | League | 2.387 |
| 01/14/09 | Lost | Foss 68 | Mount Tahoma 79 | League | 2.245 |
| 01/20/09 | Lost | Foss 54 | Wilson 55 | League | 3.765 |
| 01/23/09 | Won | Foss 72 | Central Kitsap 64 | League | 1.782 |
| 01/24/09 | Won | Foss 50 | Garfield 46 | Non-league | 8.755 |
| 02/12/09 | Won | Foss 52 | Central Kitsap 51 | Playoff | 1.782 |
| 02/21/09 | Won | Foss 50 | Kentwood 44 | Playoff | 4.291 |
| 02/25/09 | Won | Foss 64 | Decatur 61 | Playoff | 3.144 |
| 03/05/09 | Won | Foss 66 | Curtis 59 | Playoff | 3.081 |
| 12/18/09 | Won | Foss 57 | Wilson 52 | League | 3.982 |
| 12/29/09 | Won | Foss 75 | Ferris 74 | Non-league | 0.769 |
| 01/22/10 | Lost | Foss 55 | Central Kitsap 57 | League | 8.856 |
| 01/30/10 | Lost | Foss 48 | Gig Harbor 57 | League | 1.246 |
| 02/13/10 | Lost | Foss 47 | Gig Harbor 64 | Playoff | 1.246 |
| 12/08/10 | Lost | Foss 50 | Gig Harbor 64 | Non-league | 1.729 |
| 12/09/10 | Won | Foss 67 | River Ridge 64 | Non-league | 2.468 |
| 12/17/10 | Lost | Foss 72 | Decatur 79 | Non-league | 0.436 |
| 12/21/10 | Lost | Foss 60 | Bethel 70 | Non-league | 6.714 |
| 12/29/10 | Won | Foss 72 | Mount Tahoma 51 | Non-league | 1.666 |
| 01/14/11 | Lost | Foss 67 | Wilson 78 | League | 0.832 |
| 01/28/11 | Won | Foss 72 | Lincoln 69 | League | 11.816 |
| 02/02/11 | Lost | Foss 40 | Wilson 41 | League | 0.832 |
| 02/09/11 | Lost | Foss 65 | Capital 75 | League | 0.882 |
| 02/19/11 | Lost | Foss 64 | Decatur 69 | Playoff | 0.436 |
| 01/11/12 | Won | Foss 49 | Lincoln 46 | League | 2.171 |
| 01/13/12 | Lost | Foss 52 | Wilson 54 | League | 0.742 |
| 01/30/12 | Lost | Foss 100 | Capital 104 | League | 14.550 |
| 02/01/12 | Lost | Foss 35 | Wilson 39 | League | 0.742 |
| 02/10/12 | Won | Foss 78 | Lincoln 75 | Playoff | 2.171 |
| 02/18/12 | Won | Foss 62 | Columbia River 48 | Playoff | 0.263 |
| 02/20/12 | Lost | Foss 71 | Mountain View 88 | Playoff | 1.673 |
| 11/27/12 | Lost | Foss 48 | Emerald Ridge 54 | Non-league | 4.519 |
| 02/04/13 | Lost | Foss 56 | Wilson 63 | League | 9.847 |
| 02/16/13 | Lost | Foss 48 | Timberline 52 | Playoff | 8.361 |
| 12/06/13 | Won | Foss 47 | Stadium 43 | Non-league | 0.095 |
| 12/26/13 | Lost | Foss 79 | Cleveland 81 | Non-league | 5.805 |
| 12/28/13 | Won | Foss 74 | Union 72 | Non-league | 7.804 |
| 01/22/14 | Lost | Foss 62 | Timberline 65 | League | 1.780 |
| 12/05/14 | Lost | Foss 68 | Stadium 74 | Non-league | 10.771 |
| 01/02/15 | Lost | Foss 56 | Lincoln 64 | League | 1.900 |
| 01/09/15 | Won | Foss 69 | Wilson 67 | League | 3.935 |
| 01/28/15 | Lost | Foss 66 | North Thurston 68 | League | 20.961 |
| 01/30/15 | Won | Foss 93 | Wilson 79 | League | 3.935 |
| 02/07/15 | Lost | Foss 40 | Lincoln 57 | Playoff | 1.900 |
| 01/08/16 | Lost | Foss 67 | Wilson 71 | League | 0.035 |
| 01/29/16 | Lost | Foss 80 | Wilson 81 | League | 0.035 |
| 02/10/16 | Won | Foss 42 | Prairie 40 | Playoff | 3.531 |
| 02/17/16 | Lost | Foss 59 | Kennedy Catholic 66 | Playoff | 3.502 |
| 11/29/16 | Lost | Foss 70 | Timberline 80 | Non-league | 7.775 |
| 12/23/17 | Lost | Foss 53 | Camas 65 | Non-league | 6.355 |
| 02/15/18 | Lost | Foss 58 | Fife 62 | Playoff | 9.715 |
| 03/02/18 | Lost | Foss 50 | W.F. West 53 | Playoff | 6.930 |
| 03/03/18 | Lost | Foss 59 | Mark Morris 69 | Playoff | 7.312 |
| 12/11/18 | Won | Foss 68 | Fife 63 | League | 0.783 |
| 12/21/18 | Won | Foss 69 | Mount Rainier 67 | Non-league | 4.546 |
| 01/11/19 | Won | Foss 70 | Foster 57 | League | 2.213 |
| 01/14/19 | Lost | Foss 46 | Clover Park 61 | League | 10.907 |
| 01/16/19 | Won | Foss 68 | Fife 64 | League | 0.783 |
| 02/02/19 | Won | Foss 83 | Franklin Pierce 64 | Playoff | 3.952 |
| 02/16/19 | Lost | Foss 29 | Steilacoom 52 | Playoff | 1.550 |
| 12/17/19 | Won | Foss 55 | Fife 51 | League | 2.488 |
| 01/03/20 | Won | Foss 55 | Steilacoom 54 | League | 9.481 |
| 01/22/20 | Won | Foss 51 | Fife 49 | League | 2.488 |