Division I
| League | Season | ||||||
| Won | Lost | Pct | Won | Lost | Pct | ||
| Lake Washington | 7 | 2 | 0.778 | 13 | 7 | 0.650 | |
| Mercer Island | 5 | 2 | 0.714 | 6 | 8 | 0.429 | |
| Bellevue | 5 | 3 | 0.625 | 7 | 6 | 0.538 | |
| Bothell | 2 | 7 | 0.222 | 3 | 11 | 0.214 | |
Division II
| League | Season | ||||||
| Won | Lost | Pct | Won | Lost | Pct | ||
| Newport (Bellevue) | 15 | 0 | 1.000 | 24 | 3 | 0.889 | State 7th |
| Redmond | 6 | 2 | 0.750 | 9 | 8 | 0.529 | |
| Inglemoor | 5 | 5 | 0.500 | 6 | 8 | 0.429 | |
| Eastside Catholic | 0 | 0 | 0.000 | 5 | 7 | 0.417 | |
| Interlake | 0 | 8 | 0.000 | 1 | 11 | 0.083 | |
Division III
| League | Season | ||||||
| Won | Lost | Pct | Won | Lost | Pct | ||
| Juanita | 6 | 4 | 0.600 | 9 | 8 | 0.529 | |
| Sammamish | 5 | 5 | 0.500 | 10 | 8 | 0.556 | |
| Woodinville | 4 | 11 | 0.267 | 8 | 12 | 0.400 | |
| Issaquah | 2 | 13 | 0.133 | 2 | 18 | 0.100 | |
Last Season: 1987-1988 Kingco
Next Season: 1989-1990 Kingco
For league: 29 - 35 in non-league games
Home team wins 53.3% of league games (8 - 7)
137 games; average margin: 14.46
median margin: 11
35 games five points or less margin (including overtime games)
62 games ten points or less margin (including overtime games)
62 league games; average margin: 13.29
median margin: 10.5
16 games five points or less margin (including overtime games)
31 games ten points or less margin (including overtime games)
| 11/30/88 | Garfield 61, Redmond 55 | Non-league |
| 11/30/88 | Sammamish 56, Mount Rainier 33 | Non-league |
| 12/01/88 | Blanchet 63, Bothell 34 | Non-league |
| 12/01/88 | Cascade (Everett) 36, Juanita 35 | Non-league |
| 12/01/88 | Newport (Bellevue) 64, Kent-Meridian 53 | Non-league |
| 12/02/88 | Bainbridge 49, Interlake 22 | Non-league |
| 12/02/88 | Garfield 65, Sammamish 51 | Non-league |
| 12/02/88 | Kennedy 47, Lake Washington 33 | Non-league |
| 12/02/88 | Woodinville 43, Ballard 30 | Non-league |
| 12/03/88 | Bellevue 63, Roosevelt 22 | Non-league |
| 12/03/88 | Blanchet 66, Eastside Catholic 35 | Non-league |
| 12/03/88 | Newport (Bellevue) 49, Bellingham 39 | Non-league |
| 12/06/88 | Blanchet 56, Interlake 46 | Non-league |
| 12/06/88 | Inglemoor 42, Kentwood 41 2OT | Non-league |
| 12/06/88 | Kennedy 52, Bellevue 49 | Non-league |
| 12/06/88 | Lake Washington 70, Marysville-Pilchuck 32 | Non-league |
| 12/06/88 | Mount Si 43, Issaquah 39 | Non-league |
| 12/06/88 | Sultan 43, Bothell 36 | Non-league |
| 12/07/88 | Newport (Bellevue) 77, at Issaquah 36 | |
| 12/07/88 | Redmond 87, Eastside Catholic 24 | Non-league |
| 12/07/88 | Sammamish 52, Woodinville 38 | |
| 12/09/88 | at Sammamish 65, Issaquah 40 | |
| 12/09/88 | Newport (Bellevue) 50, Juanita 40 | |
| 12/10/88 | Port Angeles 52, Interlake 21 | Non-league |
| 12/10/88 | Renton 51, Inglemoor 27 | Non-league |
| 12/13/88 | Interlake 56, Eastside Catholic 43 | Non-league |
| 12/13/88 | at Juanita 61, Issaquah 27 | |
| 12/13/88 | Lake Washington 55, Bellevue 51 | |
| 12/13/88 | at Sammamish 67, Liberty (Issaquah) 54 | Non-league |
| 12/13/88 | Mercer Island 37, Bothell 32 | |
| 12/13/88 | Newport (Bellevue) 46, Woodinville 24 | |
| 12/13/88 | Redmond 48, Inglemoor 32 | |
| 12/16/88 | Bellevue 41, Mercer Island 38 | |
| 12/16/88 | Eastside Catholic 55, Orange Lutheran (CA) 15 | Non-league |
| 12/16/88 | Inglemoor 61, Interlake 57 | |
| 12/16/88 | Lake Washington 56, Bothell 28 | |
| 12/16/88 | Newport (Bellevue) 59, Sammamish 49 | |
| 12/16/88 | Woodinville 46, Juanita 34 | |
| 12/17/88 | Eastside Catholic 60, Western Christian (CA) 46 | Non-league |
| 12/17/88 | Juanita 51, Sammamish 45 | |
| 12/17/88 | Lake Washington 72, Tahoma 36 | Non-league |
| 12/17/88 | at Issaquah 41, Woodinville 40 | |
| 12/19/88 | Auburn 63, Redmond 62 | Non-league |
| 12/20/88 | Issaquah 41, at Interlake 33 | |
| 12/20/88 | Juanita 64, Inglemoor 38 | |
| 12/20/88 | Lake Washington 49, Kentridge 42 | Non-league |
| 12/20/88 | Redmond 59, Bellevue 52 | |
| 12/20/88 | Woodinville 37, Blanchet 34 | Non-league |
| 12/21/88 | at Liberty (Issaquah) 60, Issaquah 33 | Non-league |
| 12/21/88 | Juanita 38, Snohomish 36 | Non-league |
| 12/21/88 | Mariner 73, Inglemoor 48 | Non-league |
| 12/23/88 | Franklin 44, Redmond 33 | Non-league |
| 12/23/88 | Sammamish 36, Blanchet 32 | Non-league |
| 12/27/88 | at Newport (Bellevue) 51, Blanchet 35 | Non-league |
| 12/27/88 | Bothell 48, Meadowdale 15 | Non-league |
| 12/27/88 | Kent-Meridian 65, Mercer Island 32 | Non-league |
| 12/27/88 | Woodway 51, Woodinville 24 | Non-league |
| 12/28/88 | at Edmonds 56, Bothell 45 | Non-league |
| 12/28/88 | Franklin 49, Bellevue 47 | Non-league |
| 12/28/88 | Kent-Meridian 48, at Newport (Bellevue) 44 | Non-league |
| 12/28/88 | Woodinville 53, Ferndale 38 | Non-league |
| 12/29/88 | Shorewood 50, Issaquah 30 | Non-league |
| 12/30/88 | Bellevue 50, Renton 34 | Non-league |
| 12/30/88 | Everett 61, Lake Washington 59 | Non-league |
| 12/30/88 | Ballard W, Issaquah L | Non-league |
| 12/30/88 | Juanita 55, Evergreen (Highline) 26 | Non-league |
| 01/04/89 | Bothell 53, at Issaquah 51 | |
| 01/04/89 | Lake Washington 68, Redmond 49 | |
| 01/04/89 | Mercer Island 43, Interlake 32 | |
| 01/04/89 | Inglemoor 52, Woodinville 43 | |
| 01/06/89 | Bellevue 49, Interlake 41 | |
| 01/06/89 | Newport (Bellevue) 44, Mercer Island 33 | |
| 01/07/89 | Blanchet 50, Mercer Island 35 | Non-league |
| 01/10/89 | Newport (Bellevue) 54, Lake Washington 47 | |
| 01/11/89 | Eastside Catholic 35, at Issaquah 32 | Non-league |
| 01/11/89 | Bellevue 52, Woodinville 39 | |
| 01/13/89 | Lake Washington 50, Woodinville 37 | |
| 01/13/89 | Newport (Bellevue) 56, Inglemoor 41 | |
| 01/13/89 | Redmond 58, at Issaquah 34 | |
| 01/14/89 | Bothell 45, Interlake 38 | |
| 01/14/89 | Lake Washington 52, Sammamish 50 | |
| 01/14/89 | Newport (Bellevue) 56, Bellevue 41 | |
| 01/17/89 | Newport (Bellevue) 56, Redmond 45 | |
| 01/18/89 | at Lake Washington 61, Issaquah 34 | |
| 01/18/89 | Juanita 50, Bothell 45 | |
| 01/20/89 | at Mercer Island 39, Issaquah 17 | |
| 01/20/89 | Newport (Bellevue) 67, Interlake 44 | |
| 01/20/89 | Redmond 47, Juanita 44 | |
| 01/20/89 | Sammamish 57, Inglemoor 48 | |
| 01/20/89 | Woodinville 52, Eastside Catholic 29 | Non-league |
| 01/21/89 | Inglemoor 64, Bothell 42 | |
| 01/21/89 | Lake Washington 64, Eastside Catholic 37 | Non-league |
| 01/21/89 | Redmond 48, Woodinville 32 | |
| 01/24/89 | at Newport (Bellevue) 53, Issaquah 44 | |
| 01/25/89 | Eastside Catholic 53, Bothell 51 | Non-league |
| 01/25/89 | Mercer Island 62, Woodinville 35 | |
| 01/27/89 | Bellevue 40, at Issaquah 38 | |
| 01/27/89 | Lake Washington 56, Interlake 40 | |
| 01/27/89 | Newport (Bellevue) 76, Eastside Catholic 35 | Non-league |
| 01/28/89 | at Inglemoor 38, Issaquah 24 | |
| 01/28/89 | Woodinville 30, Bothell 25 | |
| 01/31/89 | Eastside Catholic 55, Juanita 46 | Non-league |
| 02/07/89 | Bellevue 58, Sammamish 50 | |
| 02/07/89 | Inglemoor 40, Lake Washington 39 | |
| 02/07/89 | Newport (Bellevue) 80, Bothell 35 | |
| 02/07/89 | Woodinville 60, Interlake 55 | |
| 02/08/89 | Mercer Island 38, Bothell 37 | |
| 02/08/89 | Newport (Bellevue) 63, Woodinville 30 | |
| 02/09/89 | Juanita 53, at Issaquah 23 | |
| 02/10/89 | Newport (Bellevue) 52, Sammamish 50 | |
| 02/10/89 | Juanita 56, Woodinville 47 | |
| 02/11/89 | at Woodinville 49, Issaquah 43 | |
| 02/13/89 | Sammamish 47, at Issaquah 31 | |
| 02/14/89 | Mercer Island 60, Eastside Catholic 46 | Non-league |
| 02/14/89 | Newport (Bellevue) 58, Juanita 55 | |
| 02/14/89 | Sammamish 64, Woodinville 52 | |
| 02/15/89 | Redmond 47, Inglemoor 37 | |
| 02/17/89 | Newport (Newport) 67, Mercer Island 43 | Kingco Tournament |
| 02/17/89 | Sammamish 47, Bellevue 33 | Kingco Tournament (loser out) |
| 02/18/89 | Juanita 63, Inglemoor 52 | Kingco Tournament (loser out) |
| 02/18/89 | Redmond 63, Lake Washington 58 | Kingco Tournament |
| 02/20/89 | Lake Washington 63, Mercer Island 48 | Kingco Tournament (3rd/4th) |
| 02/20/89 | Newport (Bellevue) 56, Redmond 45 | Kingco Tournament (1st/2nd) |
| 02/20/89 | Sammamish 37, Juanita 36 | Kingco Tournament (5th/6th) |
| 02/22/89 | Garfield 58, Juanita 57 | D2 AAA Tournament (loser out) |
| 02/23/89 | Redmond 56, Mercer Island 48 | D2 AAA Tournament |
| 02/24/89 | Lake Washington 57, Blanchet 51 | D2 AAA Tournament |
| 02/24/89 | Newport (Bellevue) 53, Sammamish 40 | D2 AAA Tournament |
| 02/25/89 | Blanchet 60, Sammamish 52 | D2 AAA Tournament (loser out) |
| 02/25/89 | Franklin 49, Redmond 45 | D2 AAA Tournament (winner to state) |
| 02/25/89 | Garfield 62, Mercer Island 56 | D2 AAA Tournament (loser out) |
| 02/25/89 | Newport (Bellevue) 65, Lake Washington 42 | D2 AAA Tournament (winner to state) |
| 02/28/89 | Garfield 70, Lake Washington 59 | D2 AAA Tournament (winner to state/loser out) |
| 03/01/89 | Blanchet 49, Redmond 41 | D2 AAA Tournament (loser out) |
| 03/08/89 | Newport (Bellevue) 67, Puyallup 29 | State AAA Tournament |
| 03/09/89 | Auburn 55, Newport (Bellevue) 47 | State AAA Tournament |
| 03/10/89 | Newport (Bellevue) 56, Fort Vancouver 54 | State AAA Tournament (loser out) |
| 03/11/89 | Pasco 53, Newport (Bellevue) 52 | State AAA Tournament (4th/7th) |