France full-back Melvyn Jaminet kicked 15 points as Perpignan beat fellow promoted side Biarritz 33-20 at home in the French Top 14 on Saturday.
Jaminet, 22, made his maiden first-division appearance after impressing on his Les Bleus debut on this summer's Australia tour and was instrumental in helping the Catalans grab their opening win of the season in the second round of the campaign.
Winger Jean-Bernard Pujol and South African fly-half Tristan Tedder crossed for the hosts as Fiji lock Johnny Dyer and Scottish loose forward Andy Cramond scored for the Basque visitors.
Ex-New Zealand centre Francis Saili and former Australia winger Henry Speight were yellow carded within the opening quarter of an hour for the away side after two separate shoulder charges.
"We managed the numerical superiority well. It did us a lot of good," Perpignan backs coach David Marty told reporters.
"Happy, I'm not sure, more relieved. The pressure made it difficult. When we managed to grow our lead we could relax and try things," he added.
- Car-lifting Castres -
Elsewhere, French back-rower Kevin Kornath crashed over in the 77th minute as Castres overcame Clermont 34-30 to go top of the table.
Earlier in the day Castres players were filmed lifting and moving a car on their way to the stadium as it had blocked their team bus.
"It's in an incredible end to the game, the solidarity perfectly reflects our team spirit," Castres' veteran lock Loic Jacquet told broadcaster Canal+.
"It confirms not just the work since the start of this season, but the work carried over from last season. It's great. Two wins from two is brilliant."
Fijian flanker Lekima Tagitagivalu was sent off as Pau beat Lyon 21-17 while Montpellier teenager Louis Foursans kicked 14 points in a 39-19 victory over Brive.
More than 12,000 fans saw Foursans' impressive performance from the boot without paying as president Mohed Altrad gave tickets away for free for their opening home game of the season.
Later, last season's semi-finalists Bordeaux-Begles welcome Stade Francais and June's runners-up La Rochelle head to Racing 92 without former All Blacks Victor Vito and Tawera Kerr-Barlow.
On Sunday, champions Toulouse host Toulon, who are set to hand Fiji's Olympic gold medallist Jiuta Wainiqolo a debut as English 21-year-old Harrison Obatoyinbo starts his first Top 14 game on the opposite wing.
The home side's flanker Anthony Jelonch, who captained France during July's series loss to the Wallabies, is named on the bench for his new club after moving from Castres during the summer.