| Baskonia B | |
| League: | Tercera FEB |
| Arena: | Polideportivo Mendizorrotza |
| Capacity: | 2,603[1] |
| Location: | Vitoria-Gasteiz, Spain |
| Colors: | Red, blue and white |
| H Pattern B: | _baskonia1920h |
| H Pattern S: | _baskonia1819h |
| A Pattern B: | _baskonia1920x |
| A Pattern S: | _baskonia1920x |
Baskonia B is the reserve team of Baskonia. It currently plays in Tercera FEB, the fourth tier of Spanish basketball.
In the 2000–01 season, it played in Liga EBA with Tiago Splitter as its most important player. In 2012, the team becomes to Fundación 5+11 from the agreement between the club and Deportivo Alavés, the main football club in Vitoria-Gasteiz. In 2016, the club requests to the FEB a place in the Spanish 2nd-tier level LEB Oro for the 2016–17 season.[2] In 2017, the request of the club has been accepted by the FEB and the team will occupy a place in the Spanish 3rd-tier level LEB Plata for the 2017–18 season.[3]
| Baskonia youth players out on loan | |||||
| Player | Position | Team | Level | On loan until | |
|---|---|---|---|---|---|
| Joseba Querejeta | 3rd tier | 30 June 2025 | |||
| Vit Hrabar | PF | ||||
| Seydina Faye | C | ||||
| Aleksandr Savkov | SF | ||||
| Season | Tier | Division | Pos. | |
|---|---|---|---|---|
| 2000–01 | 4 | Liga EBA | 9–21 | |
| 2001–05 | 5 | 1ª División | ||
| 2005–06 | 5 | 1ª División | 13th | 20–10 |
| 2006–07 | 5 | 1ª División | 3rd | 20–6 |
| 2007–08 | 6 | 1ª División | 6th | 13–15 |
| 2008–09 | 6 | 1ª División | 4th | 20–8 |
| 2009–10 | 5 | 1ª División | 15th | 15–13 |
| 2010–11 | 5 | 1ª División | 7th | 16–12 |
| 2011–12 | 5 | 1ª División | 7th | 13–15 |
| 2012–13 | 5 | 1ª División | 16th | 2–28 |
| 2013–14 | 5 | 1ª División | 9th | 13–15 |
| 2014–15 | 5 | 1ª División | 1st | 22–4 |
| 2015–16 | 5 | 1ª División | 3rd | 18–10 |
| 2016–17 | 5 | 1ª División | 1st | 23–3 |
| 2017–18 | 3 | LEB Plata | 10th | 13–17 |
| 2018–19 | 3 | LEB Plata | 18th | 15–19 |
| 2019–20 | 4 | Liga EBA | 8th | 11–11 |