La Rochelle are top of Pool 4 in the European Rugby Challenge Cup but they missed out on a bonus point in their 24-14 win over French rivals Bayonne.
Raphael Lagarde kicked the hosts in front with an early penalty but La Rochelle responded through the boot of Brock James. Lagarde added another three points before Leo Cedaro went over for a try that James converted to put La Rochelle ahead.
Lagarde reduced the deficit with another kick but Mohamed Boughanmi's try, along with the extra points from James, gave the visitors a 17-9 lead at half-time.
Levani Botia crossed for La Rochelle's third try, James again kicked the extras, at the start of the second half before Bastien Fuster got a try for Bayonne in the final minute but Manu Saubusse missed the conversion.
La Rochelle's failure to get the try bonus point means they can be usurped at the top of the pool by Gloucester.