Clermont Auvergne tightened their grip on Pool Four after completing a quickfire double against the Scarlets.
Morgan Parra is set to miss the Six Nations opener against England after being ruled out for 10 to 12 weeks.
At the end of a miserable year and just over two months before their Six Nations opener against England, France know exactly where they stand among the world's
South Africa failed to fire but they claimed their third win of the autumn internationals series with a 19-10 win over France.
Half-backs Remi Tales and Morgan Parra will lead the French attack for the third game in a row with both again named in Philippe Saint-Andre's XV.
France manager Philippe Saint-Andre resisted any temptation to make wholesale changes to the side which lost to New Zealand.
Wing Sofiane Guitoune scored a try six minutes into his international debut to help France overwhelm Tonga 38-18.
France coach Philippe Saint-Andre has rung the changes for Saturday's international against Tonga in Le Havre.
Philippe Saint Andre has made five changes to the France starting line-up for the test against Tonga in Le Harve on Saturday.
European Challenge Cup
View : 35067 times
View : 29156 times
View : 29140 times
View : 26513 times
View : 26359 times
Find detailed TV schedules for all Eurosport channel.
Find all the sports news on iPhone, BlackBerry, Android and iPad.
Follow up to the minute sports reports with Eurosport.