| League | Season | ||||||
| Won | Lost | Pct | Won | Lost | Pct | ||
| White Swan | 13 | 1 | 0.929 | 22 | 4 | 0.846 | State |
| Sunnyside Christian | 12 | 2 | 0.857 | 23 | 6 | 0.793 | State 6th |
| Royal | 11 | 3 | 0.786 | 19 | 5 | 0.792 | |
| Wahluke | 8 | 6 | 0.571 | 10 | 11 | 0.476 | |
| Warden | 5 | 9 | 0.357 | 7 | 14 | 0.333 | |
| Kittitas | 5 | 9 | 0.357 | 7 | 16 | 0.304 | |
| Mabton | 2 | 12 | 0.143 | 2 | 18 | 0.100 | |
| Granger | 0 | 14 | 0.000 | 1 | 19 | 0.050 | |
Last Season: 1989-1990 South Central
Next Season: 1991-1992 South Central
1990-1991 boys South Central | Main Page | 1990-1991 TOC
For league: 19 - 25 in non-league games
Home team wins 57.1% of league games (8 - 6)
119 games; average margin: 22.10
median margin: 18
22 games five points or less margin (including overtime games)
37 games ten points or less margin (including overtime games)
56 league games; average margin: 25.57
median margin: 22
8 games five points or less margin (including overtime games)
14 games ten points or less margin (including overtime games)
| 11/28/90 | Grandview 78, Sunnyside Christian 27 | Non-league |
| 11/30/90 | Bickleton 55, Wahluke 41 | Non-league |
| 11/30/90 | Royal 63, Othello 53 | Non-league |
| 11/30/90 | Seattle Lutheran 68, Mabton 36 | Non-league |
| 11/30/90 | Sunnyside Christian 54, Northwest Christian (Colbert) 42 | Non-league |
| 12/01/90 | Bickleton 59, Granger 36 | Non-league |
| 12/01/90 | at Highland 72, Kittitas 43 | Non-league |
| 12/01/90 | Northwest Christian (Colbert) 44, Mabton 26 | Non-league |
| 12/01/90 | Royal 61, Quincy 57 | Non-league |
| 12/01/90 | at Sunnyside Christian 70, Seattle Lutheran 49 | Non-league |
| 12/04/90 | Granger 28, West Side Christian 24 | Non-league |
| 12/06/90 | Toppenish 48, White Swan 43 | Non-league |
| 12/07/90 | at Zillah 73, Kittitas 31 | Non-league |
| 12/07/90 | Lind 36, Warden 35 | Non-league |
| 12/07/90 | Lyle 29, Mabton 25 | Non-league |
| 12/07/90 | Sunnyside Christian 67, Klickitat 39 | Non-league |
| 12/08/90 | at Wahluke 59, Kittitas 42 | |
| 12/08/90 | Klickitat 50, Granger 34 | Non-league |
| 12/08/90 | Sunnyside Christian 71, Lyle 33 | Non-league |
| 12/08/90 | Warden 35, Mabton 32 | |
| 12/08/90 | White Swan 60, Royal 47 | |
| 12/11/90 | Bickleton 42, Mabton 24 | Non-league |
| 12/11/90 | River View 51, Wahluke 47 | Non-league |
| 12/11/90 | Royal 62, Columbia (Burbank) 61 | Non-league |
| 12/14/90 | Kittitas 42, Lind 25 | Non-league |
| 12/14/90 | Royal 74, Mabton 28 | |
| 12/14/90 | Wahluke 66, Granger 42 | |
| 12/14/90 | at Odessa 36, Warden 31 | Non-league |
| 12/14/90 | White Swan 42, Sunnyside Christian 41 | |
| 12/15/90 | at Odessa 42, Kittitas 31 | Non-league |
| 12/15/90 | Sunnyside Christian 79, Trout Lake 34 | Non-league |
| 12/15/90 | Wahluke 56, Mabton 39 | |
| 12/15/90 | White Swan 80, Granger 15 | |
| 12/17/90 | Sunnyside Christian 65, Columbia (Burbank) 40 | Non-league |
| 12/18/90 | at Kittitas 37, Warden 28 | |
| 12/18/90 | White Swan 54, Highland 42 | Non-league |
| 12/20/90 | Highland 66, at Kittitas 32 | Non-league |
| 12/20/90 | Sunnyside Christian 56, Granger 23 | |
| 12/21/90 | at Sunnyside Christian 66, Kittitas 44 | |
| 12/22/90 | Trout Lake 57, Mabton 33 | Non-league |
| 12/22/90 | at Almira Coulee Hartline 48, Warden 44 3OT | Non-league |
| 12/29/90 | Sprague-Harrington 43, at Warden 36 | Non-league |
| 01/04/91 | at Kittitas 58, Granger 26 | |
| 01/04/91 | Royal 66, Wahluke 49 | |
| 01/04/91 | Sunnyside Christian 67, Mabton 28 | |
| 01/04/91 | White Swan 53, Warden 20 | |
| 01/05/91 | Kittitas 39, at Mabton 28 | |
| 01/05/91 | Royal 83, Granger 25 | |
| 01/05/91 | Sunnyside Christian 56, Warden 35 | |
| 01/05/91 | White Swan 66, Wahluke 37 | |
| 01/08/91 | at Royal 66, Lind 16 | Non-league |
| 01/08/91 | Wahluke 51, River View 45 | Non-league |
| 01/08/91 | West Side Christian 44, Granger 40 | Non-league |
| 01/08/91 | White Swan 45, Toppenish 36 | Non-league |
| 01/11/91 | Mabton 39, Granger 36 | |
| 01/11/91 | Royal 61, Sunnyside Christian 50 | |
| 01/12/91 | Royal 80, at Kittitas 23 | |
| 01/12/91 | Sunnyside Christian 74, Wahluke 52 | |
| 01/12/91 | Warden 47, Granger 30 | |
| 01/12/91 | White Swan 58, Mabton 21 | |
| 01/15/91 | Kiona-Benton 70, Granger 27 | Non-league |
| 01/15/91 | River View 47, Mabton 40 | Non-league |
| 01/15/91 | Royal 61, Warden 43 | |
| 01/15/91 | White Swan 64, Goldendale 45 | Non-league |
| 01/15/91 | Zillah 53, at Kittitas 25 | Non-league |
| 01/18/91 | Royal 77, Kiona-Benton 54 | Non-league |
| 01/18/91 | Wahluke 43, Warden 33 | |
| 01/18/91 | White Swan 63, Lyle 13 | Non-league |
| 01/19/91 | Sunnyside Christian 79, Granger 20 | |
| 01/19/91 | Wahluke 50, at Kittitas 45 | |
| 01/19/91 | Warden 39, Mabton 37 | |
| 01/19/91 | White Swan 64, Royal 37 | |
| 01/22/91 | River View 53, Granger 27 | Non-league |
| 01/22/91 | White Swan 73, at Kittitas 24 | |
| 01/25/91 | at Warden 38, Kittitas 32 | |
| 01/25/91 | Royal 58, Mabton 26 | |
| 01/25/91 | Sunnyside Christian 51, White Swan 48 | |
| 01/25/91 | Wahluke 67, Granger 44 | |
| 01/26/91 | Royal 61, Warden 19 | |
| 01/26/91 | Sunnyside Christian 64, at Kittitas 37 | |
| 01/26/91 | Wahluke 52, Mabton 51 | |
| 01/26/91 | White Swan 77, Granger 19 | |
| 01/29/91 | Kiona-Benton 58, Wahluke 47 | Non-league |
| 01/29/91 | White Swan 74, Lyle 38 | Non-league |
| 02/01/91 | Kittitas 62, at Granger 37 | |
| 02/01/91 | Royal 72, Wahluke 42 | |
| 02/01/91 | Sunnyside Christian 54, Mabton 36 | |
| 02/01/91 | White Swan 57, Warden 21 | |
| 02/02/91 | at Kittitas 44, Mabton 35 | |
| 02/02/91 | Royal 78, Granger 29 | |
| 02/02/91 | Sunnyside Christian 67, Warden 48 | |
| 02/02/91 | White Swan 76, Wahluke 39 | |
| 02/05/91 | at White Swan 108, Kittitas 33 | |
| 02/05/91 | Mabton 39, Granger 37 | |
| 02/05/91 | Sunnyside Christian 50, Royal 35 | |
| 02/05/91 | Wahluke 45, Warden 38 | |
| 02/08/91 | at Royal 73, Kittitas 36 | |
| 02/08/91 | Sunnyside Christian 64, Wahluke 49 | |
| 02/08/91 | Warden 44, Granger 35 | |
| 02/08/91 | White Swan 75, Mabton 25 | |
| 02/12/91 | Kittitas 42, Warden 38 | South Central tiebreaker (5th/loser out) |
| 02/14/91 | Glenwood defeated Wahluke | D5 B Tournament |
| 02/15/91 | White Swan 84, Kittitas 22 | D5 B Tournament |
| 02/15/91 | Royal 77, Bickleton 39 | D5 B Tournament |
| 02/15/91 | Sunnyside Christian 56, Lyle 34 | D5 B Tournament |
| 02/16/91 | Bickleton 52, Kittitas 32 | D5 B Tournament (loser out) |
| 02/16/91 | Sunnyside Christian 59, Glenwood 37 | D5 B Tournament |
| 02/16/91 | Wahluke 50, Lyle 49 | D5 B Tournament (loser out) |
| 02/16/91 | White Swan 62, Royal 53 | D5 B Tournament |
| 02/19/91 | Royal 84, Wahluke 43 | D5 B Tournament (loser out) |
| 02/22/91 | Glenwood 71, Royal 63 | D5 B Tournament (loser out) |
| 02/22/91 | White Swan 59, Sunnyside Christian 45 | D5 B Tournament (winner 1st to state) |
| 02/23/91 | Sunnyside Christian 61, Glenwood 49 | D5 B Tournament (winner 2nd to state/loser out) |
| 02/27/91 | Sunnyside Christian 63, Mossyrock 59 | State B Tournament |
| 02/27/91 | White Swan 66, Morton 47 | State B Tournament |
| 02/28/91 | Sunnyside Christian 64, Waterville-Mansfield 61 2OT | State B Tournament |
| 02/28/91 | Wilbur-Creston 56, White Swan 39 | State B Tournament |
| 03/01/91 | Raymond 51, White Swan 45 | State B Tournament (loser out) |
| 03/01/91 | Tekoa-Oakesdale 71, Sunnyside Christian 55 | State B Tournament |
| 03/02/91 | Reardan 54, Sunnyside Christian 45 | State B Tournament (3rd/6th) |