| League | Season | ||||||
| Won | Lost | Pct | Won | Lost | Pct | ||
| Kennedy | 12 | 2 | 0.857 | 16 | 7 | 0.696 | |
| Lindbergh | 10 | 4 | 0.714 | 16 | 7 | 0.696 | |
| Hazen | 10 | 4 | 0.714 | 14 | 10 | 0.583 | |
| Mount Rainier | 9 | 5 | 0.643 | 11 | 12 | 0.478 | |
| Highline | 6 | 8 | 0.429 | 7 | 13 | 0.350 | |
| Renton | 5 | 9 | 0.357 | 9 | 12 | 0.429 | |
| Evergreen (Highline) | 3 | 11 | 0.214 | 3 | 14 | 0.176 | |
| Tyee | 1 | 13 | 0.071 | 1 | 17 | 0.056 | |
Last Season: 1997-1998 Seamount
Next Season: 1999-2000 Seamount
1998-1999 boys Seamount | Main Page | 1998-1999 TOC
For league: 12 - 22 in non-league games
Home team wins 46.4% of league games (26 - 30)
105 games; average margin: 17.19
median margin: 16
19 games five points or less margin (including overtime games)
41 games ten points or less margin (including overtime games)
56 league games; average margin: 16.59
median margin: 14
8 games five points or less margin (including overtime games)
22 games ten points or less margin (including overtime games)
| 11/30/98 | at Sammamish 52, Hazen 45 | Non-league |
| 12/01/98 | at Lindbergh 55, Chief Sealth 53 OT | Non-league |
| 12/01/98 | at Liberty (Issaquah) 53, Highline 28 | Non-league |
| 12/01/98 | at West Seattle 45, Evergreen (Highline) 23 | Non-league |
| 12/01/98 | White River 50, Mount Rainier 40 | Non-league |
| 12/03/98 | at Renton 48, Ballard 47 | Non-league |
| 12/03/98 | at Kennedy 46, Foster 20 | Non-league |
| 12/03/98 | Mercer Island 51, at Mount Rainier 43 | Non-league |
| 12/03/98 | West Seattle 45, at Evergreen (Highline) 30 | Non-league |
| 12/04/98 | at Hazen 61, Clover Park 44 | Non-league |
| 12/04/98 | at Lindbergh 54, Liberty (Issaquah) 48 | Non-league |
| 12/04/98 | at Cedarcrest 55, Tyee 34 | Non-league |
| 12/07/98 | at Bothell 71, Hazen 29 | Non-league |
| 12/07/98 | at West Seattle 53, Tyee 34 | Non-league |
| 12/08/98 | Clover Park 58, Tyee 28 | Non-league |
| 12/08/98 | at Kentlake 62, Highline 38 | Non-league |
| 12/08/98 | Kentwood 64, at Renton 30 | Non-league |
| 12/08/98 | Lindbergh 62, at Skyline 56 | Non-league |
| 12/08/98 | at Liberty (Issaquah) 49, Mount Rainier 33 | Non-league |
| 12/08/98 | Mount Si 58, Kennedy 54 | Non-league |
| 12/09/98 | Mount Rainier 44, at Foster 38 | Non-league |
| 12/10/98 | at Hazen 47, Evergreen (Highline) 40 | |
| 12/10/98 | Kennedy 66, at Mount Rainier 45 | |
| 12/10/98 | Renton 41, at Lindbergh 38 | |
| 12/10/98 | Highline 42, at Tyee 32 | |
| 12/11/98 | Cedarcrest 56, at Evergreen (Highline) 50 | Non-league |
| 12/12/98 | Vashon Island 45, Highline 32 | Non-league |
| 12/15/98 | Kennedy 62, at Highline 21 | |
| 12/15/98 | Lindbergh 73, at Evergreen (Highline) 48 | |
| 12/15/98 | Mount Rainier 56, at Renton 47 | |
| 12/15/98 | at Hazen 55, Tyee 44 | |
| 12/17/98 | at Tyee 46, Evergreen (Highline) 36 | |
| 12/17/98 | at Kennedy 65, Hazen 35 | |
| 12/17/98 | Lindbergh 45, at Mount Rainier 42 | |
| 12/17/98 | Renton 66, at Highline 39 | |
| 12/18/98 | Kennedy 50, at Seattle Christian 45 | Non-league |
| 12/22/98 | Enumclaw 69, at Mount Rainier 20 | Non-league |
| 12/22/98 | at Kentwood 66, Hazen 29 | Non-league |
| 12/22/98 | at Lindbergh 69, Kentridge 36 | Non-league |
| 12/22/98 | Renton defeated at Ingraham | Non-league |
| 12/29/98 | Interlake 50, at Mount Rainier 47 | Non-league |
| 12/29/98 | at Renton 54, Nathan Hale 38 | Non-league |
| 12/30/98 | Sumner 47, Lindbergh 42 | Non-league |
| 01/02/99 | at Tahoma 62, Kennedy 41 | Non-league |
| 01/06/99 | Renton 64, at Vashon Island 37 | Non-league |
| 01/08/99 | Hazen 63, at Renton 50 | |
| 01/08/99 | at Lindbergh 52, Highline 41 | |
| 01/08/99 | Mount Rainier 54, at Evergreen (Highline) 44 | |
| 01/08/99 | at Kennedy 64, Tyee 26 | |
| 01/12/99 | at Kennedy 82, Evergreen (Highline) 49 | |
| 01/12/99 | Highline 50, at Mount Rainier 44 | |
| 01/12/99 | Lindbergh 49, at Hazen 39 | |
| 01/12/99 | Renton 61, at Tyee 29 | |
| 01/15/99 | Highline 57, at Evergreen (Highline) 53 | |
| 01/15/99 | Kennedy 74, at Renton 45 | |
| 01/15/99 | at Hazen 51, Mount Rainier 40 | |
| 01/15/99 | at Lindbergh 55, Tyee 25 | |
| 01/19/99 | Evergreen (Highline) 57, at Renton 52 | |
| 01/19/99 | at Highline 61, Hazen 53 | |
| 01/19/99 | Lindbergh 50, at Kennedy 49 | |
| 01/19/99 | at Mount Rainier 48, Tyee 22 | |
| 01/22/99 | Hazen 59, at Evergreen (Highline) 40 | |
| 01/22/99 | Highline 43, at Tyee 24 | |
| 01/22/99 | Lindbergh 47, at Renton 30 | |
| 01/22/99 | at Kennedy 57, Mount Rainier 49 | |
| 01/23/99 | at Orting 56, Tyee 22 | Non-league |
| 01/26/99 | at Lindbergh 74, Evergreen (Highline) 45 | |
| 01/26/99 | Hazen 35, at Tyee 17 | |
| 01/26/99 | at Kennedy 64, Highline 62 | |
| 01/26/99 | at Mount Rainier 62, Renton 51 | |
| 01/29/99 | at Renton 58, Highline 50 | |
| 01/29/99 | at Hazen 66, Kennedy 52 | |
| 01/29/99 | Mount Rainier 48, at Lindbergh 38 | |
| 01/29/99 | at Evergreen (Highline) 47, Tyee 31 | |
| 02/02/99 | at Mount Rainier 61, Evergreen (Highline) 36 | |
| 02/02/99 | Kennedy 59, at Tyee 27 | |
| 02/02/99 | Lindbergh 52, at Highline 48 | |
| 02/02/99 | at Hazen 45, Renton 38 | |
| 02/05/99 | Hazen 42, at Lindbergh 37 | |
| 02/05/99 | Kennedy 69, at Evergreen (Highline) 36 | |
| 02/05/99 | Mount Rainier 60, at Highline 42 | |
| 02/05/99 | at Renton 34, Tyee 28 | |
| 02/09/99 | at Highline 49, Evergreen (Highline) 33 | |
| 02/09/99 | at Mount Rainier 75, Hazen 50 | |
| 02/09/99 | Lindbergh 59, at Tyee 35 | |
| 02/09/99 | at Kennedy 74, Renton 42 | |
| 02/12/99 | at Hazen 58, Highline 41 | |
| 02/12/99 | Kennedy 49, at Lindbergh 35 | |
| 02/12/99 | Mount Rainier 51, at Tyee 22 | |
| 02/12/99 | at Evergreen (Highline) 46, Renton 39 | |
| 02/16/99 | Hazen 38, Lindbergh 35 | Seamount tiebreaker (2nd/3rd) |
| 02/18/99 | Mount Rainier 52, at Highline 33 | Seamount Tournament |
| 02/18/99 | Lindbergh 66, Renton 22 | Seamount Tournament |
| 02/20/99 | Kennedy 59, Hazen 47 | Seamount Tournament (1st/2nd) |
| 02/20/99 | Lindbergh 46, Mount Rainier 43 | Seamount Tournament (3rd/4th) |
| 02/20/99 | at Highline 61, Renton 32 | Seamount Tournament (5th/loser out) |
| 02/23/99 | Chief Sealth 68, Lindbergh 34 | D2 3A Tournament (loser out) |
| 02/23/99 | Hazen 47, Holy Names 43 | D2 3A Tournament |
| 02/23/99 | Issaquah 58, Mount Rainier 34 | D2 3A Tournament (loser out) |
| 02/23/99 | Mount Si 59, Kennedy 57 OT | D2 3A Tournament |
| 02/23/99 | Rainier Beach 80, at Highline 37 | D2 3A Tournament (loser out) |
| 02/25/99 | Kennedy 68, Rainier Beach 61 | D2 3A Tournament (loser out) |
| 02/27/99 | Bellevue 48, Kennedy 34 | D2 3A Tournament (winner to state) |
| 02/27/99 | Liberty (Issaquah) 58, Hazen 34 | D2 3A Tournament (winner to state) |
| 03/02/99 | Hazen 61, Kennedy 56 | D2 3A Tournament (loser out) |
| 03/04/99 | Holy Names 54, Hazen 35 | D2 3A Tournament (winner 5th to state/loser out) |