| League | Season | ||||||
| Won | Lost | Pct | Won | Lost | Pct | ||
| Mossyrock | 16 | 0 | 1.000 | 23 | 4 | 0.852 | State 2nd |
| Adna | 3 | 2 | 0.600 | 4 | 4 | 0.500 | |
| Rainier | 3 | 3 | 0.500 | 3 | 4 | 0.429 | |
| Napavine | 1 | 3 | 0.250 | 1 | 5 | 0.167 | |
| Wahkiakum | 1 | 4 | 0.200 | 1 | 6 | 0.143 | |
| Toutle Lake | 0 | 2 | 0.000 | 2 | 2 | 0.500 | |
| Morton | 0 | 2 | 0.000 | 1 | 6 | 0.143 | |
| Onalaska | 0 | 4 | 0.000 | 1 | 6 | 0.143 | |
| Oakville | 0 | 4 | 0.000 | 0 | 4 | 0.000 | |
Last Season: 1987-1988 Central
Next Season: 1989-1990 Central
1988-1989 boys Central | Main Page | 1988-1989 TOC
For league: 6 - 10 in non-league games
52 games; average margin: 27.15
median margin: 26
7 games five points or less margin (including overtime games)
11 games ten points or less margin (including overtime games)
24 league games; average margin: 33.83
median margin: 30
2 games five points or less margin (including overtime games)
4 games ten points or less margin (including overtime games)
| 12/02/88 | Toledo 66, Mossyrock 57 | Non-league |
| 12/02/88 | Raymond 72, Onalaska 22 | Non-league |
| 12/02/88 | Willapa Valley 58, Adna 28 | Non-league |
| 12/03/88 | Ridgefield 64, Morton 50 | Non-league |
| 12/05/88 | Mossyrock 65, Morton 33 | |
| 12/08/88 | Mossyrock 78, Onalaska 33 | |
| 12/09/88 | Toledo 59, Morton 33 | Non-league |
| 12/09/88 | Toutle Lake 47, Kalama 27 | Non-league |
| 12/12/88 | Mossyrock 82, Oakville 27 | |
| 12/15/88 | Mossyrock 64, Wahkiakum 55 | |
| 12/16/88 | Mossyrock 65, at Yoncalla (OR) 42 | Non-league |
| 12/17/88 | Adna 68, Wahkiakum 23 | |
| 12/17/88 | Mossyrock 48, Oakland (OR) 47 | Non-league |
| 12/17/88 | Napavine 50, Oakville 31 | |
| 12/21/88 | Onalaska 62, La Center 34 | Non-league |
| 12/29/88 | Raymond 65, Onalaska 39 | Non-league |
| 12/29/88 | Toutle Lake 45, Kalama 34 | Non-league |
| 12/30/88 | Willapa Valley 51, Adna 24 | Non-league |
| 01/02/89 | Mossyrock 98, Napavine 21 | |
| 01/03/89 | Toledo 51, Morton 21 | Non-league |
| 01/05/89 | Mossyrock 66, Adna 52 | |
| 01/09/89 | Mossyrock 102, Toutle Lake 33 | |
| 01/13/89 | Mossyrock 74, Rainier 53 | |
| 01/16/89 | Australian team (AU) 45, Mossyrock 43 | Non-league |
| 01/16/89 | Rainier 64, Oakville 19 | |
| 01/17/89 | Mossyrock 66, Morton 29 | |
| 01/17/89 | Wahkiakum 66, Onalaska 55 | |
| 01/19/89 | Mossyrock 63, Onalaska 51 | |
| 01/20/89 | Rainier 38, Wahkiakum 37 | |
| 01/21/89 | Adna 42, Rainier 37 | |
| 01/21/89 | Mossyrock 65, Oakville 10 | |
| 01/26/89 | Mossyrock 70, Wahkiakum 41 | |
| 02/02/89 | Mossyrock 75, Adna 46 | |
| 02/06/89 | Mossyrock 72, Rainier 42 | |
| 02/08/89 | Adna 76, Napavine 29 | |
| 02/09/89 | Mossyrock 98, Napavine 10 | |
| 02/09/89 | Rainier 56, Onalaska 49 | |
| 02/11/89 | Raymond 92, Napavine 23 | Non-league |
| 02/13/89 | Mossyrock 69, Toutle Lake 39 | |
| 02/15/89 | Mossyrock 62, Toledo 61 | Non-league |
| 02/18/89 | Raymond 63, Morton 33 | D4 B Tournament |
| 02/18/89 | South Bend 62, Napavine 24 | D4 B Tournament (loser out) |
| 02/20/89 | Adna 67, Lake Quinault 48 | D4 B Tournament (loser out) |
| 02/20/89 | Morton 52, Naselle 40 | D4 B Tournament (loser out) |
| 02/20/89 | Mossyrock 65, Wahkiakum 61 | D4 B Tournament (winner to state) |
| 02/20/89 | Pe Ell 54, Rainier 50 | D4 B Tournament (loser out) |
| 02/25/89 | Raymond 59, Mossyrock 44 | D4 B Tournament (1st/2nd) |
| 02/25/89 | Willapa Valley 56, Wahkiakum 50 | D4 B Tournament (winner 3rd to state/loser out) |
| 03/01/89 | Mossyrock 90, Darrington 51 | State B Tournament |
| 03/02/89 | Mossyrock 72, Watson Groen Christian 37 | State B Tournament |
| 03/03/89 | Mossyrock 56, Tekoa-Oakesdale 37 | State B Tournament |
| 03/04/89 | Raymond 56, Mossyrock 44 | State B Tournament (1st/2nd) |