|No. 18 – JL Bourg-en-Bresse|
|League||LNB Pro B|
September 14, 1978 |
|Listed height||1.89 m (6 ft 2 in)|
|2000–02, 2003–04||Joventut Badalona|
|2002, 2008–2012||CB Valladolid|
|2002–03||CE Lleida Bàsquet|
|2007–08||CB Lucentum Alicante|
After winning three competitions with CSP Limoges, Dumas arrives to Spain and signs with Joventut Badalona, where he plays two years. team who was runner-up of the Copa del Rey. After playing in Badalona he plays between 2002 and 2003 in Fórum Valladolid and Caprabo Lleida.
The next year comes back to Joventut Badalona, where he is runner-up of the Copa del Rey.
In 2006, he signs with Baloncesto León of LEB League, Spanish second division, and he plays two years. In the first one, León losses in the semifinals of the promotion playoffs and in the second, wins the Copa Príncipe and promotes to Liga ACB as runner-up.
In summer 2012, Dumas leaves Valladolid and comes back to France.
- Ligue Nationale de Basketball: (1) 1999–2000
- Coupe de France: (1) 1999–2000
- Korać Cup: (1) 1999-2000
- Copa Príncipe: (1) 2007
- LEB Oro: (1) 2008–09
- Stéphane Dumas será el timón del Alicante Costa Blanca Solobasket.com September 17, 2007
- Stéphane Dumas renueva con el CB Valladolid El Norte de Castilla. July 15, 2009
- Stéphane Dumas seguirá siendo el timón del Blancos de Rueda Valladolid ACB.com July 24, 2011