Curling pair Jennifer Dodds and Bruce Mouat won their second Winter Olympics match against Estonia in Cortina.
A four-point haul in the penultimate end secured a 10-5 win over the debutants in the competition, building on their victory over Norway on Wednesday.
The duo are next in action against the Czech Republic in their third round robin match at 18:05 GMT on Thursday.
The British duo led 4-3 at the break in an initially tense encounter, with scoring following the hammer.
Team GB then led 6-3 after the break, before the Estonian pair of Mari Kaldvee and Harri Lill themselves scored two points to keep the tie close heading into the final two ends.
It was in the seventh end that the Brits used their powerplay to score a vital four points, which effectively ended the match and saw Kaldvee and Lili shake hands an end early, with the scores at 10-5.
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Speaking after their second victory, Mouat said: "We're very happy with how we're performing."
"That was a better game for both of us -- well for me at least, Jen played awesome last night.
"I am just excited that we are 2-0 to start the Olympics and hopefully getting Team GB off on the right foot."