| League | Season | ||||||
| Won | Lost | Pct | Won | Lost | Pct | ||
| Kennedy | 17 | 1 | 0.944 | 26 | 3 | 0.897 | State 2nd |
| Lindbergh | 16 | 2 | 0.889 | 18 | 5 | 0.783 | |
| Hazen | 11 | 7 | 0.611 | 11 | 11 | 0.500 | |
| Mount Rainier | 10 | 8 | 0.556 | 13 | 11 | 0.542 | |
| Liberty (Issaquah) | 9 | 9 | 0.500 | 10 | 10 | 0.500 | |
| Renton | 8 | 10 | 0.444 | 13 | 12 | 0.520 | |
| Highline | 7 | 11 | 0.389 | 8 | 11 | 0.421 | |
| Evergreen (Highline) | 7 | 11 | 0.389 | 7 | 13 | 0.350 | |
| Mount Si | 3 | 15 | 0.167 | 4 | 16 | 0.200 | |
| Tyee | 2 | 16 | 0.111 | 4 | 16 | 0.200 | |
Last Season: 1988-1989 Seamount
Next Season: 1990-1991 Seamount
1989-1990 boys Seamount | Main Page | 1989-1990 TOC
For league: 10 - 5 in non-league games
Home team wins 51.1% of league games (46 - 44)
114 games; average margin: 13.85
median margin: 13
33 games five points or less margin (including overtime games)
51 games ten points or less margin (including overtime games)
81 league games; average margin: 14.32
median margin: 14
20 games five points or less margin (including overtime games)
33 games ten points or less margin (including overtime games)
| 11/28/89 | at Nathan Hale 43, Evergreen (Highline) 38 | Non-league |
| 11/28/89 | Tahoma 40, Mount Si 17 | Non-league |
| 11/29/89 | Lindbergh 57, at Eastside Catholic 32 | Non-league |
| 11/29/89 | Tyee 40, at Ballard 28 | Non-league |
| 12/01/89 | Fife 49, Mount Rainier 45 | Non-league |
| 12/01/89 | Hoquiam 73, Hazen 41 | Non-league |
| 12/01/89 | Tyee 41, Cleveland 28 | Non-league |
| 12/02/89 | Renton 46, at Jefferson 39 | Non-league |
| 12/05/89 | Hazen 54, at Mount Rainier 48 | |
| 12/05/89 | Highline 53, at Mount Si 40 | |
| 12/05/89 | Liberty (Issaquah) 62, at Evergreen (Highline) 48 | |
| 12/05/89 | Renton 44, at Lindbergh 42 | |
| 12/05/89 | Kennedy 50, at Tyee 34 | |
| 12/08/89 | at Liberty (Issaquah) 53, Hazen 46 | |
| 12/08/89 | at Mount Rainier 42, Highline 38 | |
| 12/08/89 | Lindbergh 48, at Evergreen (Highline) 35 | |
| 12/08/89 | at Kennedy 62, Mount Si 38 | |
| 12/08/89 | Tyee 43, at Renton 42 | |
| 12/09/89 | at Foster 59, Hazen 57 | Non-league |
| 12/12/89 | at Tyee 43, Evergreen (Highline) 38 | |
| 12/12/89 | Liberty (Issaquah) 44, at Highline 40 | |
| 12/12/89 | Lindbergh 53, at Hazen 33 | |
| 12/12/89 | Mount Rainier 45, at Mount Si 36 | |
| 12/12/89 | at Kennedy 53, Renton 38 | |
| 12/15/89 | at Lindbergh 41, Highline 32 | |
| 12/15/89 | Kennedy 61, at Evergreen (Highline) 35 | |
| 12/15/89 | Mount Rainier 56, at Liberty (Issaquah) 53 | |
| 12/15/89 | at Renton defeated Mount Si | |
| 12/15/89 | at Hazen 69, Tyee 42 | |
| 12/16/89 | at Highline 50, Foster 43 | Non-league |
| 12/19/89 | Evergreen (Highline) defeated at Renton | |
| 12/19/89 | at Kennedy 84, Hazen 64 | |
| 12/19/89 | Liberty (Issaquah) 51, at Mount Si 45 | |
| 12/19/89 | Lindbergh 50, at Mount Rainier 36 | |
| 12/19/89 | at Highline 46, Tyee 32 | |
| 12/28/89 | Kennedy 66, West Seattle 52 | Non-league |
| 12/29/89 | at Kennedy 59, Newport (Bellevue) 54 | Non-league |
| 12/29/89 | Mount Rainier 49, Shelton 46 OT | Non-league |
| 12/29/89 | Renton 34, Jefferson 33 | Non-league |
| 12/30/89 | at Lindbergh 58, Spanaway Lake 51 | Non-league |
| 01/03/90 | Kennedy 61, at Highline 44 | |
| 01/03/90 | at Lindbergh 46, Liberty (Issaquah) 27 | |
| 01/03/90 | Mount Rainier 49, at Tyee 42 | |
| 01/03/90 | at Evergreen (Highline) 56, Mount Si 52 | |
| 01/03/90 | at Hazen 45, Renton 34 | |
| 01/05/90 | at Evergreen (Highline) defeated Hazen | |
| 01/05/90 | Highline defeated at Renton | |
| 01/05/90 | Kennedy 66, at Mount Rainier 58 | |
| 01/05/90 | Lindbergh 57, at Mount Si 21 | |
| 01/05/90 | at Liberty (Issaquah) 51, Tyee 50 | |
| 01/09/90 | at Highline 50, Evergreen (Highline) 35 | |
| 01/09/90 | Lindbergh 49, at Tyee 21 | |
| 01/09/90 | at Hazen 55, Mount Si 51 | |
| 01/09/90 | at Mount Rainier 40, Renton 38 | |
| 01/12/90 | at Hazen 69, Highline 44 | |
| 01/12/90 | at Lindbergh 55, Kennedy 49 | |
| 01/12/90 | at Evergreen (Highline) 44, Mount Rainier 43 | |
| 01/12/90 | Renton defeated at Liberty (Issaquah) | |
| 01/12/90 | at Mount Si 41, Tyee 27 | |
| 01/16/90 | at Liberty (Issaquah) 53, Evergreen (Highline) 25 | |
| 01/16/90 | Kennedy 52, at Tyee 35 | |
| 01/16/90 | Lindbergh 42, at Renton 29 | |
| 01/16/90 | Mount Rainier 74, at Hazen 64 | |
| 01/16/90 | at Highline 49, Mount Si 34 | |
| 01/19/90 | at Lindbergh 44, Evergreen (Highline) 30 | |
| 01/19/90 | Kennedy 63, at Mount Si 41 | |
| 01/19/90 | at Hazen 58, Liberty (Issaquah) 49 | |
| 01/19/90 | at Highline 46, Mount Rainier 44 | |
| 01/19/90 | Renton defeated at Tyee | |
| 01/20/90 | at Lindbergh 67, Hazen 41 | |
| 01/20/90 | Kennedy 51, at Renton 33 | |
| 01/20/90 | Liberty (Issaquah) 44, at Highline 41 | |
| 01/20/90 | at Mount Rainier 56, Mount Si 48 | |
| 01/20/90 | at Evergreen (Highline) 36, Tyee 31 | |
| 01/23/90 | at Kennedy 54, Evergreen (Highline) 30 | |
| 01/23/90 | Hazen 59, at Tyee 39 | |
| 01/23/90 | at Mount Rainier 42, Liberty (Issaquah) 39 OT | |
| 01/23/90 | Lindbergh 46, at Highline 24 | |
| 01/23/90 | at Mount Si 34, Renton 24 | |
| 01/26/90 | Highline defeated at Tyee | |
| 01/26/90 | Kennedy 75, at Hazen 58 | |
| 01/26/90 | at Lindbergh 35, Mount Rainier 34 | |
| 01/26/90 | Liberty (Issaquah) 64, at Mount Si 54 | |
| 01/26/90 | Renton 43, at Evergreen (Highline) 26 | |
| 01/30/90 | Evergreen (Highline) 56, at Mount Si 52 | |
| 01/30/90 | Hazen 71, at Renton 49 | |
| 01/30/90 | at Kennedy 70, Highline 26 | |
| 01/30/90 | Lindbergh 44, at Liberty (Issaquah) 31 | |
| 01/30/90 | at Mount Rainier 68, Tyee 39 | |
| 01/31/90 | at Kennedy 59, Liberty (Issaquah) 31 | |
| 02/01/90 | at Lindbergh 69, Mount Si 32 | |
| 02/02/90 | at Hazen 65, Evergreen (Highline) 53 | |
| 02/02/90 | Liberty (Issaquah) 50, at Tyee 27 | |
| 02/02/90 | at Kennedy 60, Mount Rainier 39 | |
| 02/02/90 | Renton 33, at Highline 31 | |
| 02/06/90 | Hazen 71, at Mount Si 38 | |
| 02/06/90 | at Evergreen (Highline) 42, Highline 38 | |
| 02/06/90 | Kennedy 53, at Liberty (Issaquah) 32 | |
| 02/06/90 | at Renton defeated Mount Rainier | |
| 02/06/90 | at Lindbergh 65, Tyee 39 | |
| 02/09/90 | at Mount Rainier 53, Evergreen (Highline) 39 | |
| 02/09/90 | Hazen 82, at Highline 59 | |
| 02/09/90 | at Renton 51, Liberty (Issaquah) 35 | |
| 02/09/90 | at Kennedy 55, Lindbergh 51 | |
| 02/09/90 | Mount Si defeated at Tyee | |
| 02/16/90 | Mount Rainier 63, Hazen 47 | Seamount Tournament |
| 02/16/90 | Renton 55, at Liberty (Issaquah) 33 | Seamount Tournament (loser out) |
| 02/17/90 | Kennedy 56, Lindbergh 38 | Seamount Tournament (1st/2nd) |
| 02/17/90 | Renton 60, at Hazen 57 OT | Seamount Tournament (4th/loser out) |
| 02/22/90 | Lakeside (Seattle) 61, at Renton 37 | D2 AA Tournament |
| 02/22/90 | Seattle Prep 59, Lindbergh 54 | D2 AA Tournament |
| 02/23/90 | Rainier Beach 67, Mount Rainier 29 | D2 AA Tournament |
| 02/23/90 | Kennedy 65, West Seattle 31 | D2 AA Tournament |
| 02/24/90 | Renton 48, Lindbergh 46 OT | D2 AA Tournament (loser out) |
| 02/24/90 | Mount Rainier 53, West Seattle 46 | D2 AA Tournament (loser out) |
| 02/24/90 | Rainier Beach 89, Kennedy 49 | D2 AA Tournament (winner to state) |
| 02/27/90 | Kennedy 55, Renton 45 | D2 AA Tournament (winner to state/loser out) |
| 02/28/90 | Seattle Prep 55, Mount Rainier 54 | D2 AA Tournament (winner to state/loser out) |
| 03/02/90 | Kennedy 35, Seattle Prep 34 | D2 AA Tournament (3rd/4th) |
| 03/07/90 | Kennedy 56, West Valley (Yakima) 45 | State AA Tournament |
| 03/08/90 | Kennedy 42, Bainbridge 41 | State AA Tournament |
| 03/09/90 | Kennedy 56, Anacortes 54 | State AA Tournament |
| 03/10/90 | Lakeside (Seattle) 57, Kennedy 33 | State AA Tournament (1st/2nd) |