History:*in 1983 BBC Sion and Wissigen Basket Sion merged into BBC Sion-Wissigen
League achievements:
Swiss LNB 3rd Place -1973, 76Swiss Cup Semifinals -1982 Swiss LNB Champion -1984 |
League positions:
| Season | Tier | Division | W-L | Position + PlayOff | Cup | European competitions |
|---|---|---|---|---|---|---|
| 1962-64 | 2 | LNB | 2-6 | 7th (Group 2) | ||
| 1964-66 | 3 | 1LN |  | |||
| 1966-67 | 2 | LNB | 8-6 | 4th (Groupe Vaud-Va-lais) | ||
| 1967-68 | 2 | LNB | 4-8 | 7th (Group II) | ||
| 1968-69 | 2 | LNB | 5-13 | 8th (Group 1)  | ||
| 1969-70 | 3 | 1LN | ||||
| 1970-71 | 3 | 1LN | ||||
| 1971-72 | 3 | 1LN | | |||
| 1972-72 | 2 | LNB | 1-3 | 3rd (Final Group Qualification) | ||
| 1972-72 | 3 | 1LN | 1-3 | 3rd (Final Group Qualification) | ||
| 1972-72 | 2 | LNB | 12-6 | 2nd (Group 2)  | ||
| 1972-73 | 3 | 1LN | 12-6 | 2nd (Group 2) | ||
| 1973-74 | 2 | LNB | 9th (Group 1) | |||
| 1974-75 | 3 | 1LN | | |||
| 1975-76 | 2 | LNB | 14-5 | 3rd | ||
| 1976-77 | 1 | LNA | 8-14 | 8th | ||
| 1977-78 | 1 | LNA | 2-19 | 12th | ||
| 1978-79 | 2 | LNB | 2-20 | 12th | ||
| 1979-80 | 3 | 1LN | ||||
| 1980-81 | 3 | 1LN | | |||
| 1981-82 | 2 | LNB | 10-12 | 8th | Semifinals | |
| 1982-83? | 2 | LNB | 5-15 | 10th | ||
| 1983-84 | 2 | LNB | 17-2 | 1st  | ||
| 1984-85 | 1 | LNA | 7th | |||
| 1985-86 | 2 | LNB | ||||
| 1986-87 | 2 | LNB | 7th | |||
| 1987-88 | 2 | LNB | 7th | |||
| 1988-89 | 2 | LNB | 6-11 | 7th | ||
| 1989-90 | 2 | LNB | 8th | |||
| 1990-91 | 2 | LNB | 9th | |||
| 1991-92 | 2 | LNB | 10th | |||
| 1992-93 | 2 | NLB | ||||
| 1993-94 | 2 | NLB | ||||
| 1994-95 | 2 | NLB | ||||
| 1995-96 | 2 | NLB | ||||
| 1996-97 | 2 | NLB | ||||
| 1997-98 | 2 | NLB | ||||
| 1998-99 | 2 | NLB | ||||
| 1999-00 | 2 | NLB | ||||
| 2000-01 | 2 | NLB | ||||
| 2001-02 | 2 | NLB | ||||
| 2002-03 | 2 | NLB | ||||
| 2003-04 | 2 | NLB | ||||
| 2004-05 | 2 | NLB | ||||
| 2005-06 | 2 | NLB | ||||
| 2006-07 | 2 | NLB | ||||
| 2007-08 | 2 | NLB | ||||
| 2008-09 | 2 | NLB | ||||
| 2009-10 | 2 | NLB | ||||
| 2010-11? | 2 | NLB | | |||
| 2011-12 | 4 | 2LN | | |||
| 2012-13 | 3 | 1LN | 11th | |||
| 2013-14 | 3 | 1LN | 8th | |||
| 2014-15 | 3 | 1LN | 5th | |||
| 2015-16 | 3 | 1LN | 6th | |||
| 2016-17 | 3 | 1LN | 7th | |||
| 2017-18 | 3 | NL1 | 3rd | |||
| 2018-19 | 3 | NL1 | 8th | |||
| 2019-20 | 2 | NLB | 7th | |||
| 2020-21 | 2 | NLB | 9th | |||
| 2021-21 | 2 | NLB | 5-15 | 8th | ||
| 2021-21 | 2 | NLB | 8th | |||
| 2021-22 | 2 | NLB | 12th (West) | |||
| 2022-23 | 3 | NL1 | 3-10 | 12th (Group West) | ||
| 2023-24 | 3 | NL1 | 9-0 | 1st (Group West 6-15), lost in 1/8 Finals 0-2 to Tigers U23 | ||
| 2024-25 | 3 | NL1 | 7-9 | 10th (West) |
