| League | Season | ||||||
| Won | Lost | Pct | Won | Lost | Pct | ||
| Richland | 15 | 1 | 0.938 | 19 | 2 | 0.905 | State |
| Davis | 14 | 2 | 0.875 | 18 | 3 | 0.857 | State |
| Kennewick | 10 | 6 | 0.625 | 11 | 7 | 0.611 | |
| Kamiakin | 8 | 8 | 0.500 | 10 | 9 | 0.526 | |
| Eisenhower | 8 | 8 | 0.500 | 8 | 8 | 0.500 | |
| Pasco | 7 | 9 | 0.438 | 10 | 11 | 0.476 | |
| Wenatchee | 7 | 9 | 0.438 | 9 | 12 | 0.429 | |
| Moses Lake | 2 | 14 | 0.125 | 2 | 15 | 0.118 | |
| Walla Walla | 1 | 15 | 0.062 | 1 | 16 | 0.059 | |
Next Season: 1980-1981 Big Nine
For league: 12 - 8 in non-league games
Home team wins 50.0% of league games (8 - 8)
42 games; average margin: 14.21
median margin: 10
13 games five points or less margin (including overtime games)
22 games ten points or less margin (including overtime games)
16 league games; average margin: 11.88
median margin: 8.5
5 games five points or less margin (including overtime games)
9 games ten points or less margin (including overtime games)
| Richland 80, Shadle Park 63 | Non-league | |
| Mead 79, Walla Walla 55 | Non-league | |
| Kennewick 53, University 50 OT | Non-league | |
| Lewis and Clark 74, Kamiakin 69 | Non-league | |
| Davis 81, Gonzaga Prep 60 | Non-league | |
| Kamiakin 68, Ferris 64 | Non-league | |
| Richland 73, Central Valley 63 | Non-league | |
| Richland 74, Gonzaga Prep 65 | Non-league | |
| Richland 99, Rogers (Spokane) 43 | Non-league | |
| Pasco 107, Rogers (Spokane) 62 | Non-league | |
| Kamiakin 64, Rogers (Spokane) 40 | Non-league | |
| University 63, Pasco 54 | Non-league | |
| Shadle Park 84, Pasco 66 | Non-league | |
| Shadle Park 88, Moses Lake 41 | Non-league | |
| Mead 72, Kennewick 51 | Non-league | |
| Pasco 74, Central Valley 69 OT | Non-league | |
| 12/01/79 | Ellensburg 68, at Wenatchee 54 | Non-league |
| 12/04/79 | at Wenatchee 62, Eastmont 46 | Non-league |
| 12/07/79 | at Foss 84, Wenatchee 62 | Non-league |
| 12/14/79 | Wenatchee 58, at Kamiakin 57 | |
| 12/21/79 | at Kennewick 63, Wenatchee 58 | |
| 12/22/79 | Eisenhower 46, at Wenatchee 45 | |
| 12/28/79 | Wenatchee 60, at Eastmont 54 | Non-league |
| 01/04/80 | at Wenatchee 74, Moses Lake 51 | |
| 01/05/80 | Wenatchee 73, at Walla Walla 60 | |
| 01/15/80 | at Davis 86, Wenatchee 67 | |
| 01/18/80 | Richland 89, at Wenatchee 61 | |
| 01/19/80 | at Eisenhower 58, Wenatchee 54 | |
| 01/25/80 | at Wenatchee 63, Kamiakin 60 | |
| 02/01/80 | Kennewick 61, at Wenatchee 52 | |
| 02/05/80 | Wenatchee 83, at Pasco 76 | |
| 02/08/80 | Wenatchee 73, at Moses Lake 48 | |
| 02/09/80 | at Wenatchee 84, Walla Walla 72 | |
| 02/12/80 | at Richland 98, Wenatchee 74 | |
| 02/16/80 | at Davis 78, Wenatchee 70 | |
| 02/18/80 | Pasco 68, at Wenatchee 60 | |
| 02/20/80 | Pasco 71, Wenatchee 61 | Big Nine Tournament (loser out) |
| 03/07/80 | Mead 72, Richland 70 | State AAA Tournament-regional (loser out) |
| 03/07/80 | Davis 68, University 57 | State AAA Tournament-regional |
| 03/13/80 | Davis 47, Juanita 45 | State AAA Tournament |
| 03/14/80 | Garfield 59, Davis 54 | State AAA Tournament |
| 03/15/80 | Davis 58, Federal Way 57 | State AAA Tournament (3rd/5th) |