TRY Montpellier!

Montpellier switch the attack to Timoci Nagusa on the blind side who makes good ground stretching the defence

Trinh-Duc starts where he left off last week with an early penalty to get his side off the mark. 3-0 Montpellier

Penalty to Montpellier after great work at the ruck from Rene Ranger

We're under way here with a drop off from Francois Trinh-Duc

Castres are looking for their second win of the season after getting off the mark in convincing fashion last week with a 30-6 victory against Bayonne. However Montpellier have started the season well and last weekend became only the second team in 4 years to beat Clermont in the Stade Marcel Michelin. François Trinh-Duc's will be the key for the them tonight after a match winning in week 3 with the stage looking set for a thrilling encounter.

Hello and welcome to Ultimate Rugby's live coverage of the fourth week of Top 14 action where we will see Montpellier take on back-to-back finalists Castres. We will be bringing you live updates from Altrad Stadium.