Alex Allan's dismissal did not prove costly as Glasgow Warriors beat the Scarlets, while Leinster scored 59 in a victory over the Dragons.
Defending champions Saracens have won each of their opening nine Premiership fixtures as they stayed perfect by beating Wasps 29-6.
After Argentina and Barbarians scored five tries apiece at Twickenham, Elton Jantjies' late drop-goal settled a thrilling contest.
Harlequins won an entertaining encounter with Exeter Chiefs to hand them their first defeat of the Premiership season.
Three tries in eight minutes from Keith Earls helped Munster to an easy win over Edinburgh, while Ospreys nilled Zebre.
Jared Rosser scored two tries as the Dragons claimed a much-needed victory in Sunday's Pro14 action.
There were wins for Clermont Auvergne and La Rochelle in the Top 14 on Sunday.
Leicester Tigers almost took advantage of Saracens' ill-disciplined display, but fell short in a Premiership cracker at Welford Road.
At the 10th time of asking Fiji have a win over France, who were stunned in Paris.
The United States tested a second-string Ireland team early on, but Joe Schmidt's men ultimately cruised to victory at the Aviva Stadium.
There was a dramatic win for Racing 92 in Top 14, as Toulouse went top but only after a battle at Pau.
First-half tries from Tomas Francis and Liam Williams helped Wales beat South Africa 20-11 for their ninth successive victory.
For the first time ever, England have recorded six straight wins over Australia after an impressive 37-18 win at Twickenham on Saturday.
Greig Laidlaw kicked three penalties before Sean Maitland's try as Scotland beat Argentina 14-9 at Murrayfield.
New Zealand responded to their defeat against Ireland by putting Italy to the sword in Rome, Jordie Barrett scoring four of 10 tries.
There were wins in the Premiership on Saturday for Exeter, Sale and Wasps, the latter triumphing despite a stunning Bristol fightback.