| League | Season | ||||||
| Won | Lost | Pct | Won | Lost | Pct | ||
| Sunnyside Christian | 13 | 1 | 0.929 | 25 | 2 | 0.926 | State 4th |
| White Swan | 10 | 4 | 0.714 | 14 | 9 | 0.609 | |
| Warden | 9 | 5 | 0.643 | 14 | 8 | 0.636 | |
| Royal | 6 | 5 | 0.545 | 7 | 12 | 0.368 | |
| Kittitas | 6 | 8 | 0.429 | 8 | 10 | 0.444 | |
| Mabton-Bickleton | 4 | 7 | 0.364 | 11 | 9 | 0.550 | |
| Wahluke | 3 | 10 | 0.231 | 5 | 14 | 0.263 | |
| Granger | 0 | 11 | 0.000 | 3 | 15 | 0.167 | |
Last Season: 1988-1989 South Central
Next Season: 1990-1991 South Central
1989-1990 boys South Central | Main Page | 1989-1990 TOC
For league: 24 - 19 in non-league games
Home team wins 64.3% of league games (9 - 5)
105 games; average margin: 18.14
median margin: 17
15 games five points or less margin (including overtime games)
34 games ten points or less margin (including overtime games)
50 league games; average margin: 18.82
median margin: 17
6 games five points or less margin (including overtime games)
16 games ten points or less margin (including overtime games)
| 12/01/89 | Glenwood 45, Wahluke 36 | Non-league |
| 12/01/89 | Mabton-Bickleton 68, Granger 27 | Non-league |
| 12/01/89 | Warden 60, at Lind 31 | Non-league |
| 12/02/89 | Highland 49, Kittitas 42 | Non-league |
| 12/02/89 | Othello 37, Royal 36 | Non-league |
| 12/02/89 | Sunnyside Christian 57, Glenwood 42 | Non-league |
| 12/02/89 | Wahluke 56, Moses Lake Sophomores 37 | Non-league |
| 12/05/89 | Granger 29, West Side Christian 27 OT | Non-league |
| 12/05/89 | Kiona-Benton 48, Wahluke 46 | Non-league |
| 12/05/89 | Kittitas 59, Thorp 23 | Non-league |
| 12/05/89 | Mabton-Bickleton 43, Klickitat 23 | Non-league |
| 12/05/89 | Quincy 49, Royal 40 | Non-league |
| 12/08/89 | Warden 52, Mabton-Bickleton 34 | |
| 12/09/89 | at Wahluke 42, Kittitas 36 | |
| 12/09/89 | at Warden 51, Lind 34 | Non-league |
| 12/09/89 | Mabton-Bickleton 46, Hood River Valley JV (OR) 22 | Non-league |
| 12/09/89 | Royal 58, White Swan 45 | |
| 12/09/89 | Sunnyside Christian 66, Granger 21 | |
| 12/12/89 | River View 70, Wahluke 54 | Non-league |
| 12/12/89 | Royal 64, Columbia (Burbank) 52 | Non-league |
| 12/12/89 | Sunnyside Christian 56, White Swan 38 | |
| 12/12/89 | Warden 68, Soap Lake 42 | Non-league |
| 12/15/89 | Kittitas 48, Thorp 39 | Non-league |
| 12/16/89 | Mabton-Bickleton 48, Wahluke 44 | |
| 12/16/89 | Sunnyside Christian 57, at Kittitas 45 | |
| 12/16/89 | Warden 65, Royal 48 | |
| 12/16/89 | White Swan 79, Granger 19 | |
| 12/19/89 | at Warden 41, Kittitas 31 | |
| 12/19/89 | River View 51, Royal 49 | Non-league |
| 12/19/89 | Sunnyside Christian 63, Columbia (Burbank) 38 | Non-league |
| 12/21/89 | at Warden 73, Almira Coulee Hartline 31 | Non-league |
| 12/21/89 | Sunnyside Christian 56, Odessa 23 | Non-league |
| 12/22/89 | Reardan 76, Royal 45 | Non-league |
| 12/22/89 | Sunnyside Christian 66, Warden 32 | Non-league |
| 12/23/89 | Highland 40, White Swan 37 | Non-league |
| 12/23/89 | Mabton-Bickleton 54, River View 37 | Non-league |
| 12/23/89 | Zillah 51, Kittitas 48 | Non-league |
| 12/27/89 | Goldendale 39, White Swan 35 | Non-league |
| 12/28/89 | Granger defeated at White Swan | Non-league |
| 12/28/89 | Sunnyside Christian 77, Mount Vernon Christian 44 | Non-league |
| 12/29/89 | Sunnyside Christian 64, at Watson Groen Christian 47 | Non-league |
| 12/29/89 | at White Swan 66, Touchet 49 | Non-league |
| 12/30/89 | Dayton 81, at Royal 37 | Non-league |
| 01/05/90 | Kittitas 52, at Granger 32 | |
| 01/05/90 | Royal 63, Wahluke 34 | |
| 01/05/90 | Sunnyside Christian 57, Mabton-Bickleton 37 | |
| 01/05/90 | White Swan 58, Warden 42 | |
| 01/06/90 | at Kittitas 55, Mabton-Bickleton 48 | |
| 01/06/90 | Sunnyside Christian 56, Warden 47 | |
| 01/06/90 | White Swan 53, Wahluke 36 | |
| 01/09/90 | Granger 50, West Side Christian 28 | Non-league |
| 01/09/90 | River View 54, Wahluke 42 | Non-league |
| 01/12/90 | at White Swan 44, Kittitas 40 | |
| 01/12/90 | Sunnyside Christian 54, Royal 32 | |
| 01/12/90 | Warden 60, Wahluke 43 | |
| 01/13/90 | at Royal 41, Kittitas 38 | |
| 01/13/90 | Sunnyside Christian 74, Wahluke 50 | |
| 01/13/90 | Warden 71, Granger 31 | |
| 01/13/90 | White Swan 55, Mabton-Bickleton 44 | |
| 01/16/90 | Kiona-Benton 54, Granger 25 | Non-league |
| 01/16/90 | Mabton-Bickleton 43, River View 36 | Non-league |
| 01/16/90 | Wahluke 57, Eisenhower Sophomores 22 | Non-league |
| 01/19/90 | Sunnyside Christian 79, Granger 35 | |
| 01/20/90 | Mabton-Bickleton 43, Warden 31 | |
| 01/20/90 | at Kittitas 50, Wahluke 40 | |
| 01/20/90 | White Swan 70, Royal 48 | |
| 01/23/90 | River View 57, Granger 45 | Non-league |
| 01/26/90 | Wahluke 61, Granger 44 | |
| 01/26/90 | Warden 53, at Kittitas 47 OT | |
| 01/26/90 | White Swan 57, Sunnyside Christian 49 | |
| 01/27/90 | at Sunnyside Christian 59, Kittitas 34 | |
| 01/27/90 | Mabton-Bickleton 61, Wahluke 49 | |
| 01/27/90 | Warden 54, Royal 48 | |
| 01/27/90 | White Swan 57, Granger 34 | |
| 01/30/90 | Toppenish JV 38, Granger 31 | Non-league |
| 02/02/90 | at Kittitas 60, Granger 43 | |
| 02/02/90 | Royal 72, Wahluke 42 | |
| 02/02/90 | Sunnyside Christian 46, Mabton-Bickleton 42 | |
| 02/02/90 | Warden 66, White Swan 46 | |
| 02/03/90 | Kittitas 48, at Mabton-Bickleton 43 | |
| 02/03/90 | Royal 75, Granger 36 | |
| 02/03/90 | Sunnyside Christian 50, Warden 29 | |
| 02/03/90 | White Swan 56, Wahluke 18 | |
| 02/06/90 | Mabton-Bickleton 68, Granger 25 | |
| 02/06/90 | Sunnyside Christian 75, Royal 63 | |
| 02/06/90 | Wahluke 54, Warden 44 | |
| 02/06/90 | at Kittitas 45, White Swan 38 | |
| 02/09/90 | Royal 53, at Kittitas 47 | |
| 02/09/90 | Sunnyside Christian 76, Wahluke 41 | |
| 02/09/90 | Warden 65, Granger 38 | |
| 02/09/90 | White Swan defeated Mabton-Bickleton | |
| 02/16/90 | Glenwood 65, Mabton-Bickleton 52 | D5 B Tournament |
| 02/16/90 | Sunnyside Christian 69, Royal 46 | D5 B Tournament |
| 02/16/90 | Warden 56, Lyle 42 | D5 B Tournament |
| 02/16/90 | White Swan 59, Trout Lake 29 | D5 B Tournament |
| 02/17/90 | Glenwood 73, White Swan 70 OT | D5 B Tournament |
| 02/17/90 | Mabton-Bickleton 50, Trout Lake 38 | D5 B Tournament (loser out) |
| 02/17/90 | Sunnyside Christian 54, Warden 37 | D5 B Tournament |
| 02/20/90 | Mabton-Bickleton 50, Warden 44 | D5 B Tournament (loser out) |
| 02/20/90 | White Swan 77, Royal 52 | D5 B Tournament (loser out) |
| 02/23/90 | Sunnyside Christian 87, Glenwood 47 | D5 B Tournament (winner to state) |
| 02/23/90 | White Swan 48, Mabton-Bickleton 33 | D5 B Tournament (loser out) |
| 02/24/90 | Glenwood 53, White Swan 46 | D5 B Tournament (winner 2nd to state/loser out) |
| 02/28/90 | Sunnyside Christian 62, Wilbur-Creston 58 | State B Tournament |
| 03/01/90 | Mossyrock 64, Sunnyside Christian 53 | State B Tournament |
| 03/02/90 | Sunnyside Christian 50, St. George's 43 | State B Tournament (loser out) |
| 03/03/90 | Sunnyside Christian 57, Glenwood 43 | State B Tournament (4th/7th) |