| League | Season | ||||||
| Won | Lost | Pct | Won | Lost | Pct | ||
| Mossyrock | 15 | 1 | 0.938 | 23 | 4 | 0.852 | State 6th |
| Wahkiakum | 2 | 2 | 0.500 | 3 | 5 | 0.375 | |
| Morton | 1 | 2 | 0.333 | 2 | 4 | 0.333 | |
| Toutle Lake | 1 | 2 | 0.333 | 1 | 3 | 0.250 | |
| Adna | 1 | 3 | 0.250 | 1 | 3 | 0.250 | |
| Oakville | 0 | 2 | 0.000 | 0 | 2 | 0.000 | |
| Napavine | 0 | 2 | 0.000 | 0 | 2 | 0.000 | |
| Rainier | 0 | 3 | 0.000 | 0 | 4 | 0.000 | |
| Winlock | 0 | 3 | 0.000 | 0 | 5 | 0.000 | |
Last Season: 1988-1989 Central
Next Season: 1990-1991 Central
1989-1990 boys Central | Main Page | 1989-1990 TOC
For league: 5 - 4 in non-league games
41 games; average margin: 20.29
median margin: 17
3 games five points or less margin (including overtime games)
14 games ten points or less margin (including overtime games)
20 league games; average margin: 25.40
median margin: 26.5
2 games five points or less margin (including overtime games)
6 games ten points or less margin (including overtime games)
| 11/27/89 | Woodland 44, Winlock 33 | Non-league |
| 12/01/89 | Mossyrock 60, at Yoncalla (OR) 43 | Non-league |
| 12/02/89 | Woodland 53, Winlock 29 | Non-league |
| 12/02/89 | Mossyrock 58, Oakland (OR) 22 | Non-league |
| 12/07/89 | Mossyrock 60, Rainier 54 | |
| 12/11/89 | Mossyrock 59, Morton 34 | |
| 12/14/89 | Mossyrock 70, Winlock 34 | |
| 12/21/89 | Morton 56, Winlock 36 | |
| 12/21/89 | Wahkiakum 78, Adna 46 | |
| 12/21/89 | Mossyrock 59, Oakville 31 | |
| 12/28/89 | at Ridgefield 50, Morton 33 | Non-league |
| 12/28/89 | Willapa Valley 68, Wahkiakum 51 | Non-league |
| 12/29/89 | Morton 46, Camas 36 | Non-league |
| 01/04/90 | Mossyrock 56, Wahkiakum 51 | |
| 01/08/90 | Mossyrock 52, Toledo 42 | Non-league |
| 01/11/90 | Mossyrock 51, Adna 45 | |
| 01/15/90 | Mossyrock 57, Toutle Lake 48 | |
| 01/19/90 | Mossyrock 78, Rainier 50 | |
| 01/23/90 | Mossyrock 56, Morton 45 | |
| 01/26/90 | Adna 52, Wahkiakum 48 | |
| 01/26/90 | Toutle Lake 51, Rainier 37 | |
| 01/26/90 | Mossyrock 67, Winlock 31 | |
| 01/29/90 | Mossyrock 82, Adna 41 | |
| 01/30/90 | Mossyrock 75, Napavine 20 | |
| 02/01/90 | Mossyrock 62, Napavine 31 | |
| 02/02/90 | Mossyrock 93, Oakville 25 | |
| 02/03/90 | Mossyrock 47, Toledo 38 | Non-league |
| 02/05/90 | Wahkiakum 73, Mossyrock 67 | |
| 02/08/90 | Mossyrock 83, Toutle Lake 36 | |
| 02/13/90 | Willapa Valley 44, Morton 23 | D4 B Tournament (loser out) |
| 02/13/90 | Wishkah Valley 47, Toutle Lake 43 | D4 B Tournament (loser out) |
| 02/17/90 | Mossyrock 63, Wishkah Valley 48 | D4 B Tournament |
| 02/17/90 | Willapa Valley 66, Wahkiakum 56 | D4 B Tournament |
| 02/19/90 | Mossyrock 78, Rainier 53 | D4 B Tournament (winner to state) |
| 02/19/90 | Wahkiakum 70, South Bend 61 | D4 B Tournament (loser out) |
| 02/24/90 | Raymond 54, Mossyrock 43 | D4 B Tournament (1st/2nd) |
| 02/24/90 | Willapa Valley 90, Wahkiakum 63 | D4 B Tournament (winner to state/loser out) |
| 02/28/90 | Mossyrock 73, Watson Groen Christian 51 | State B Tournament |
| 03/01/90 | Mossyrock 64, Sunnyside Christian 53 | State B Tournament |
| 03/02/90 | Asotin 69, Mossyrock 59 | State B Tournament |
| 03/03/90 | Tekoa-Oakesdale 57, Mossyrock 49 | State B Tournament (3rd/6th) |