| Top 14 |
| Sat 15 Aug 2009 | Biarritz - Castres | 12-24  |
|
| Sat 22 Aug 2009 | Castres - Bourgoin | 29-9  |
|
| Sun 06 Sept 2009 | Castres - Montpellier | (B) 33-18 |
|
| Sat 12 Sept 2009 | Stade Français - Castres | 44-18 |
|
| Wen 16 Sept 2009 | Montauban - Castres | 18-18 |
|
| Sun 20 Sept 2009 | Castres - Racing Metro 92 | 9-6 |
|
| Fri 25 Sept 2009 | Brive - Castres | 11-9 (B) |
|
| Tue 29 Sept 2009 | Albi - Castres | 21-25 (B) |
|
| Sat 03 Oct 2009 | Castres - Toulon | 21-19 |
|
| Fri 23 Oct 2009 | Bayonne - Castres | 6-15 |
|
| Fri 30 Oct 2009 | USAP - Castres | 17-15 (B) |
|
| Thu 05 Nov 2009 | Castres - Clermont | 9-9 |
|
| Sat 21 Nov 2009 | Castres - Stade Toulousain | (B) 30-10  |
|
| Fri 27 Nov 2009 | Castres - Biarritz | (B) 34-6 |
|
| Sat 05 Dec 2009 | Bourgoin - Castres | 16-9 (B) |
|
| Wen 30 Dec 2009 | Castres - Montauban | 30-7 |
|
| Sun 03 Jan 2010 | Castres - Albi | (B) 44-10 |
|
| Sat 09 Jan 2010 | Montpellier - Castres | 15-0 |
|
| Wen 27 Jan 2010 | Castres - Stade Français | 32-14 |
|
| Sat 20 Feb 2010 | Racing Metro 92 - Castres | 24-24 |
|
| Sat 06 Mar 2010 | Castres - Brive | (B) 35-10 |
|
| Fri 12 Mar 2010 | Toulon - Castres | 19-6 |
|
| Sat 27 Mar 2010 | Castres - Bayonne | |
|
| Sat 03 Apr 2010 | Castres - USAP | |
|
| Sat 17 Apr 2010 | Clermont - Castres | |
|
| Sat 24 Apr 2010 | Stade Toulousain - Castres | |
|
