| League | Season | ||||||
| Won | Lost | Pct | Won | Lost | Pct | ||
| Sunnyside | 11 | 3 | 0.786 | 20 | 7 | 0.741 | State 8th |
| West Valley (Yakima) | 11 | 3 | 0.786 | 17 | 7 | 0.708 | State |
| Selah | 9 | 5 | 0.643 | 15 | 6 | 0.714 | |
| Eastmont | 7 | 7 | 0.500 | 12 | 11 | 0.522 | |
| Hanford | 7 | 7 | 0.500 | 10 | 10 | 0.500 | |
| Ellensburg | 5 | 9 | 0.357 | 8 | 13 | 0.381 | |
| Prosser | 5 | 9 | 0.357 | 8 | 13 | 0.381 | |
| Othello | 1 | 13 | 0.071 | 3 | 17 | 0.150 | |
Last Season: 1988-1989 Mid-Valley
Next Season: 1990-1991 Mid-Valley
1989-1990 boys Mid-Valley | Main Page | 1989-1990 TOC
For league: 24 - 16 in non-league games
Home team wins 57.1% of league games (8 - 6)
101 games; average margin: 14.52
median margin: 13
20 games five points or less margin (including overtime games)
41 games ten points or less margin (including overtime games)
49 league games; average margin: 15.27
median margin: 13
9 games five points or less margin (including overtime games)
18 games ten points or less margin (including overtime games)
| 11/29/89 | Sunnyside 46, Grandview 36 | Non-league |
| 12/01/89 | Omak 61, Eastmont 47 | Non-league |
| 12/01/89 | Redmond 37, Hanford 36 | Non-league |
| 12/01/89 | Sunnyside 54, Davis 42 | Non-league |
| 12/01/89 | Wenatchee 75, Ellensburg 33 | Non-league |
| 12/01/89 | West Valley (Yakima) 50, Eisenhower 43 | Non-league |
| 12/02/89 | Othello 37, Royal 36 | Non-league |
| 12/02/89 | Pasco 59, West Valley (Yakima) 50 | Non-league |
| 12/02/89 | Selah 78, Davis 31 | Non-league |
| 12/05/89 | Connell 61, Othello 30 | Non-league |
| 12/05/89 | Selah 42, Eisenhower 37 | Non-league |
| 12/07/89 | Sunnyside 58, at McLoughlin (OR) 31 | Non-league |
| 12/08/89 | Prosser 47, Davis 46 | Non-league |
| 12/08/89 | Selah 72, at Rogers (Spokane) 49 | Non-league |
| 12/08/89 | Walla Walla 61, at Hanford 41 | Non-league |
| 12/08/89 | West Valley (Yakima) 62, East Valley (Yakima) 47 | Non-league |
| 12/09/89 | Eastmont 69, Wenatchee 45 | Non-league |
| 12/09/89 | Ellensburg 47, Moses Lake 43 | Non-league |
| 12/09/89 | Grandview 50, Prosser 40 | Non-league |
| 12/09/89 | Selah 62, at Gonzaga Prep 55 | Non-league |
| 12/09/89 | Sunnyside 51, Toppenish 38 | Non-league |
| 12/12/89 | Connell 57, Othello 34 | Non-league |
| 12/12/89 | Kennewick 71, at West Valley (Yakima) 68 | Non-league |
| 12/15/89 | Connell 62, Prosser 52 | Non-league |
| 12/15/89 | at Clarkston 64, Eastmont 53 | Non-league |
| 12/15/89 | at Pullman 48, Ellensburg 37 | Non-league |
| 12/15/89 | Grandview 53, Sunnyside 40 | Non-league |
| 12/15/89 | Hanford at Richland | Non-league |
| 12/15/89 | West Valley (Yakima) 53, Riverside (OR) 32 | Non-league |
| 12/16/89 | Eastmont 59, at Pullman 28 | Non-league |
| 12/16/89 | at Clarkston 52, Ellensburg 39 | Non-league |
| 12/16/89 | Kiona-Benton 39, Prosser 36 | Non-league |
| 12/16/89 | West Valley (Yakima) 49, Heppner (OR) 34 | Non-league |
| 12/19/89 | Eastmont 59, Wenatchee 45 | Non-league |
| 12/19/89 | Othello 41, Kiona-Benton 39 | Non-league |
| 12/19/89 | Prosser 58, Toppenish 40 | Non-league |
| 12/19/89 | Selah 55, Naches Valley 46 | Non-league |
| 12/22/89 | Eastmont 57, Monroe 27 | Non-league |
| 12/22/89 | Hanford 40, Grandview 38 | Non-league |
| 12/22/89 | Sunnyside 59, Connell 51 | Non-league |
| 01/05/90 | Hanford 62, Prosser 34 | |
| 01/06/90 | Eastmont 67, Othello 49 | |
| 01/06/90 | Grandview 35, Prosser 32 | Non-league |
| 01/06/90 | Selah 48, Sunnyside 44 | |
| 01/06/90 | West Valley (Yakima) 72, at Ellensburg 52 | |
| 01/11/90 | at Ellensburg 41, Prosser 37 | |
| 01/11/90 | Sunnyside 73, Othello 43 | |
| 01/11/90 | West Valley (Yakima) 58, Eastmont 50 | |
| 01/13/90 | Eastmont 56, at Ellensburg 38 | |
| 01/13/90 | Hanford 62, Othello 25 | |
| 01/13/90 | Selah 43, Prosser 40 | |
| 01/13/90 | West Valley (Yakima) 59, Sunnyside 49 | |
| 01/18/90 | at Selah 54, Ellensburg 36 | |
| 01/18/90 | Sunnyside 61, Eastmont 53 | |
| 01/18/90 | West Valley (Yakima) 44, Hanford 37 | |
| 01/20/90 | Eastmont 74, Hanford 42 | |
| 01/20/90 | Prosser 39, West Valley (Yakima) 36 | |
| 01/20/90 | Selah 56, Othello 32 | |
| 01/20/90 | Sunnyside 55, at Ellensburg 30 | |
| 01/25/90 | Ellensburg 59, at Othello 41 | |
| 01/25/90 | Sunnyside 52, Hanford 45 | |
| 01/25/90 | West Valley (Yakima) 46, Selah 35 | |
| 01/27/90 | at Ellensburg 44, Hanford 42 | |
| 01/27/90 | Selah 58, Eastmont 52 | |
| 01/27/90 | Sunnyside 54, Prosser 40 | |
| 01/27/90 | West Valley (Yakima) 72, Othello 30 | |
| 01/30/90 | Selah 48, Prosser 36 | |
| 02/01/90 | at Prosser 52, Ellensburg 39 | |
| 02/01/90 | Sunnyside 69, Othello 39 | |
| 02/02/90 | West Valley (Yakima) 61, Eastmont 48 | |
| 02/03/90 | Ellensburg 58, at Eastmont 52 | |
| 02/03/90 | Hanford 58, Othello 45 | |
| 02/03/90 | Sunnyside 65, West Valley (Yakima) 62 2OT | |
| 02/08/90 | Selah 57, at Ellensburg 36 | |
| 02/08/90 | Sunnyside 55, Eastmont 54 | |
| 02/08/90 | West Valley (Yakima) 52, Hanford 40 | |
| 02/10/90 | at Sunnyside 55, Ellensburg 30 | |
| 02/10/90 | Hanford 57, Eastmont 46 | |
| 02/10/90 | Prosser 63, West Valley (Yakima) 56 | |
| 02/10/90 | Selah 71, Othello 35 | |
| 02/13/90 | at West Valley (Yakima) 53, Ellensburg 35 | |
| 02/13/90 | Selah 44, Sunnyside 43 | |
| 02/15/90 | Eastmont 71, Prosser 54 | |
| 02/15/90 | at Ellensburg 72, Othello 44 | |
| 02/15/90 | Sunnyside 64, Hanford 47 | |
| 02/15/90 | West Valley (Yakima) 62, Selah 59 2OT | |
| 02/17/90 | Eastmont 68, Selah 60 | |
| 02/17/90 | at Hanford 71, Ellensburg 54 | |
| 02/17/90 | Sunnyside 58, Prosser 44 | |
| 02/17/90 | West Valley (Yakima) 66, Othello 41 | |
| 02/20/90 | Prosser 59, Ellensburg 51 | Mid-Valley tiebreaker (6th/loser out) |
| 02/22/90 | Eastmont 62, Hanford 52 | D5/6 AA Tournament (loser out) |
| 02/24/90 | Sunnyside 47, Selah 41 | D5/6 AA Tournament |
| 02/24/90 | West Valley (Yakima) 60, Eastmont 45 | D5/6 AA Tournament |
| 02/27/90 | West Valley (Yakima) 53, Sunnyside 39 | D5/6 AA Tournament (winner 1st to state) |
| 03/03/90 | Sunnyside 75, Eastmont 46 | D5/6 AA Tournament (winner 2nd to state/loser out) |
| 03/07/90 | Aberdeen 45, Sunnyside 41 | State AA Tournament |
| 03/07/90 | Kennedy 56, West Valley (Yakima) 45 | State AA Tournament |
| 03/08/90 | Rainier Beach 55, West Valley (Yakima) 37 | State AA Tournament (loser out) |
| 03/08/90 | Sunnyside 59, Seattle Prep 42 | State AA Tournament (loser out) |
| 03/09/90 | Sunnyside 51, Sehome 44 | State AA Tournament (loser out) |
| 03/10/90 | Rainier Beach 60, Sunnyside 43 | State AA Tournament (5th/8th) |