| League | Season | ||||||
| Won | Lost | Pct | Won | Lost | Pct | ||
| Kennewick | 12 | 4 | 0.750 | 19 | 7 | 0.731 | |
| Richland | 11 | 5 | 0.688 | 16 | 9 | 0.640 | |
| Kamiakin | 10 | 6 | 0.625 | 16 | 13 | 0.552 | State 5th |
| Eisenhower | 9 | 7 | 0.562 | 12 | 9 | 0.571 | |
| Pasco | 9 | 7 | 0.562 | 15 | 14 | 0.517 | State |
| Davis | 9 | 7 | 0.562 | 10 | 11 | 0.476 | |
| Walla Walla | 5 | 11 | 0.312 | 5 | 15 | 0.250 | |
| Wenatchee | 4 | 12 | 0.250 | 6 | 14 | 0.300 | |
| Southridge | 3 | 13 | 0.188 | 7 | 13 | 0.350 | |
Last Season: 1997-1998 Big Nine
Next Season: 1999-2000 Big Nine
1998-1999 boys Big Nine | Main Page | 1998-1999 TOC
For league: 19 - 18 in non-league games
Home team wins 56.7% of league games (38 - 29)
123 games; average margin: 14.33
median margin: 11
24 games five points or less margin (including overtime games)
51 games ten points or less margin (including overtime games)
67 league games; average margin: 13.07
median margin: 11
15 games five points or less margin (including overtime games)
32 games ten points or less margin (including overtime games)
| 12/01/98 | at Hermiston (OR) 55, Pasco 44 | Non-league |
| 12/03/98 | at Eastmont 63, Wenatchee 50 | Non-league |
| 12/04/98 | at Eisenhower 41, Ferris 32 | Non-league |
| 12/04/98 | at Pasco 83, Hanford 49 | Non-league |
| 12/04/98 | Hermiston (OR) 65, Kennewick 54 | Non-league |
| 12/04/98 | at Mead 53, Kamiakin 37 | Non-league |
| 12/04/98 | at Southridge 38, Mount Spokane 27 | Non-league |
| 12/04/98 | at Central Valley 76, Walla Walla 51 | Non-league |
| 12/05/98 | Davis 56, North Central 22 | Non-league |
| 12/05/98 | at Wenatchee 67, Jefferson 57 | Non-league |
| 12/05/98 | at Central Valley 71, Kamiakin 48 | Non-league |
| 12/05/98 | at Kennewick 79, Moses Lake 34 | Non-league |
| 12/05/98 | Richland 80, at Prosser 43 | Non-league |
| 12/05/98 | at Gonzaga Prep 49, Walla Walla 36 | Non-league |
| 12/08/98 | at Kamiakin 59, Hanford 23 | Non-league |
| 12/08/98 | at Richland 70, Hermiston (OR) 67 | Non-league |
| 12/08/98 | at Pendleton (OR) 58, Walla Walla 32 | Non-league |
| 12/10/98 | Richland 70, at Hanford 64 | Non-league |
| 12/10/98 | at Hermiston (OR) 81, Walla Walla 39 | Non-league |
| 12/11/98 | Eisenhower 39, Selah 31 | Non-league |
| 12/11/98 | Kennewick 92, at Prosser 36 | Non-league |
| 12/11/98 | Wenatchee 68, at Southridge 64 | |
| 12/11/98 | West Valley (Yakima) 64, Davis 31 | Non-league |
| 12/12/98 | at Hermiston (OR) 57, Kamiakin 43 | Non-league |
| 12/12/98 | Kennewick 62, at Ferris 50 | Non-league |
| 12/12/98 | at University 64, Pasco 53 | Non-league |
| 12/12/98 | Pendleton (OR) 45, at Richland 32 | Non-league |
| 12/12/98 | Selah 51, Davis 50 | Non-league |
| 12/12/98 | Southridge 51, at Hanford 48 | Non-league |
| 12/12/98 | West Valley (Yakima) 54, Eisenhower 38 | Non-league |
| 12/15/98 | Eastmont 49, at Wenatchee 47 | Non-league |
| 12/15/98 | at Eisenhower 60, Ellensburg 48 | Non-league |
| 12/15/98 | at Kennewick 74, Southridge 44 | |
| 12/15/98 | West Valley (Yakima) 55, at Pasco 37 | Non-league |
| 12/18/98 | at Eisenhower 44, Davis 41 | |
| 12/18/98 | at Richland 50, Kennewick 43 | |
| 12/18/98 | Southridge 50, Riverside 22 | Non-league |
| 12/18/98 | at Pasco 56, Walla Walla 40 | |
| 12/19/98 | at Ellensburg 54, Davis 49 | Non-league |
| 12/19/98 | Kamiakin 70, at Wenatchee 41 | |
| 12/19/98 | Pasco 59, at Eisenhower 51 OT | |
| 12/19/98 | Richland 48, at Walla Walla 30 | |
| 12/19/98 | Southridge 45, Ione (OR) 44 | Non-league |
| 12/22/98 | Kennewick 61, at Hermiston (OR) 50 | Non-league |
| 01/02/99 | Wenatchee 56, at Omak 45 | Non-league |
| 01/05/99 | Eisenhower 50, at Richland 39 | |
| 01/05/99 | at Kamiakin 42, Southridge 35 | |
| 01/05/99 | at Kennewick 60, Walla Walla 28 | |
| 01/05/99 | at Davis 67, Wenatchee 64 OT | |
| 01/08/99 | Eisenhower 58, at Southridge 47 | |
| 01/08/99 | Kennewick 76, at Wenatchee 59 | |
| 01/08/99 | at Davis 51, Pasco 47 | |
| 01/08/99 | at Kamiakin 48, Richland 46 | |
| 01/09/99 | at Richland 70, Davis 45 | |
| 01/09/99 | at Kamiakin 55, Kennewick 49 | |
| 01/09/99 | at Pasco 76, Southridge 42 | |
| 01/09/99 | at Walla Walla 46, Wenatchee 37 | |
| 01/15/99 | Davis 63, at Kamiakin 45 | |
| 01/15/99 | Kennewick 48, at Eisenhower 47 | |
| 01/15/99 | Pasco 72, at Wenatchee 69 | |
| 01/15/99 | Walla Walla 51, at Southridge 39 | |
| 01/16/99 | at Walla Walla 51, Eisenhower 43 | |
| 01/16/99 | Kamiakin 82, at Pasco 56 | |
| 01/16/99 | at Davis 42, Southridge 32 | |
| 01/16/99 | at Richland 71, Wenatchee 45 | |
| 01/22/99 | Kamiakin 53, at Walla Walla 42 | |
| 01/22/99 | at Kennewick 66, Davis 46 | |
| 01/22/99 | at Richland 62, Pasco 46 | |
| 01/22/99 | at Eisenhower 75, Wenatchee 56 | |
| 01/23/99 | at Kamiakin 61, Eisenhower 41 | |
| 01/23/99 | Kennewick 48, at Pasco 38 | |
| 01/23/99 | at Southridge 35, Richland 34 | |
| 01/23/99 | at Davis 50, Walla Walla 42 | |
| 01/28/99 | Eisenhower 55, at Davis 49 | |
| 01/29/99 | Pasco 56, at Walla Walla 44 | |
| 01/29/99 | Richland 61, at Kennewick 42 | |
| 01/29/99 | at Wenatchee 87, Southridge 67 | |
| 01/30/99 | Eisenhower 70, at Pasco 57 | |
| 01/30/99 | Kennewick 67, at Southridge 29 | |
| 01/30/99 | at Richland 51, Walla Walla 39 | |
| 01/30/99 | Wenatchee 94, at Kamiakin 69 | |
| 02/02/99 | Davis 63, at Wenatchee 61 | |
| 02/02/99 | at Southridge 52, Kamiakin 38 | |
| 02/02/99 | Kennewick 60, at Walla Walla 43 | |
| 02/02/99 | Richland 49, at Eisenhower 45 | |
| 02/05/99 | at Pasco 64, Davis 40 | |
| 02/05/99 | at Richland 54, Kamiakin 51 | |
| 02/05/99 | at Kennewick 68, Wenatchee 41 | |
| 02/06/99 | Kamiakin 66, at Kennewick 59 | |
| 02/06/99 | Pasco 47, at Southridge 37 | |
| 02/06/99 | at Davis 50, Richland 46 | |
| 02/06/99 | at Wenatchee 67, Walla Walla 56 | |
| 02/09/99 | at Eisenhower 64, Southridge 47 | |
| 02/12/99 | at Kennewick 70, Eisenhower 48 | |
| 02/12/99 | at Davis 55, Kamiakin 37 | |
| 02/12/99 | Southridge 63, at Walla Walla 57 | |
| 02/12/99 | at Pasco 65, Wenatchee 60 | |
| 02/13/99 | Davis 50, at Southridge 42 | |
| 02/13/99 | at Kamiakin 57, Pasco 55 | |
| 02/13/99 | Richland 64, at Wenatchee 56 | |
| 02/13/99 | at Eisenhower 60, Walla Walla 42 | |
| 02/19/99 | Eisenhower 65, at Wenatchee 49 | |
| 02/19/99 | Kennewick 59, at Davis 47 | |
| 02/19/99 | at Pasco 57, Richland 51 | |
| 02/19/99 | Walla Walla 52, at Kamiakin 39 | |
| 02/20/99 | at Walla Walla 59, Davis 51 | |
| 02/20/99 | Kamiakin 67, at Eisenhower 46 | |
| 02/20/99 | at Kennewick 56, Pasco 49 | |
| 02/20/99 | at Richland 60, Southridge 36 | |
| 02/23/99 | at Richland 58, Davis 51 | Big Nine Tournament (loser out) |
| 02/23/99 | Pasco 58, at Eisenhower 49 | Big Nine Tournament (loser out) |
| 02/26/99 | Pasco 56, at Kamiakin 45 | Big Nine Tournament |
| 02/26/99 | at Kennewick 57, Richland 51 | Big Nine Tournament |
| 02/27/99 | Kennewick 64, at Kamiakin 40 | Big Nine Tournament (1st/2nd) |
| 02/27/99 | at Richland 72, Pasco 43 | Big Nine Tournament (3rd/4th) |
| 03/02/99 | Lewis and Clark 69, Kamiakin 41 | D5/6/8 4A Tournament |
| 03/02/99 | Mead 62, Pasco 50 | D5/6/8 4A Tournament |
| 03/02/99 | Central Valley 55, Richland 50 | D5/6/8 4A Tournament |
| 03/02/99 | Kennewick 58, University 44 | D5/6/8 4A Tournament |
| 03/05/99 | Mead 52, Kennewick 41 | D5/6/8 4A Tournament (winner to state) |
| 03/05/99 | Kamiakin 60, Richland 51 | D5/6/8 4A Tournament (loser out) |
| 03/05/99 | Pasco 57, University 46 | D5/6/8 4A Tournament (loser out) |
| 03/06/99 | Kamiakin 47, Kennewick 43 | D5/6/8 4A Tournament (winner to state/loser out) |
| 03/06/99 | Pasco 56, Lewis and Clark 41 | D5/6/8 4A Tournament (winner to state/loser out) |
| 03/10/99 | Redmond 57, Kamiakin 47 | State 4A Tournament |
| 03/10/99 | Kent-Meridian 41, Pasco 34 | State 4A Tournament |
| 03/11/99 | Kamiakin 54, Port Angeles 38 | State 4A Tournament (loser out) |
| 03/11/99 | Pasco 72, Puyallup 43 | State 4A Tournament (loser out) |
| 03/12/99 | Kamiakin 46, Bellarmine Prep 33 | State 4A Tournament (loser out) |
| 03/12/99 | Central Valley 61, Pasco 45 | State 4A Tournament (loser out) |
| 03/13/99 | Kamiakin 56, Central Valley 52 | State 4A Tournament (5th/8th) |