Former All Black lock Hoeata was dismissed for dangerous play as Agen pushed for an early try, with the hosts taking full advantage to claim back-to-back wins for the first time this season.
Tamaz Mchedlidze and Johann Sadie closed the gap before a yellow card for Paul Willemse further enhanced Agen’s numerical advantage, Jake McIntyre and Filipo Nakosi punishing the visitors’ indiscipline with another two scores.
A penalty from McIntyre restored their nine-point lead after Joe Tomane crossed, with Montpellier unable to push on for a win after Aaron Cruden converted Romain Ruffenach’s 71st-minute try.
Lyon got back to winning ways with the boot of Mike Harris seeing them past Toulon 15-6, Pau moved up to fourth with a 29-27 victory over Castres and Toulouse overcame Bordeaux-Begles, who had Thierry Paiva sent off, 25-19.
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