Great Britain made a winning start to their Fed Cup campaign with victory over Portugal in Tallinn, Estonia.
Wins for Heather Watson and Johanna Konta gave Britain an unassailable 2-0 lead in the first Group C match.
They go on to face Latvia on Thursday and Turkey on Friday, with the group winners earning a play-off against the Group B winners on Saturday.
The winners of that tie will progress to a World Group II promotion play-off in April.
Britain are seeded third among the 14 nations in Tallinn and first in their group, and Portugal were unable to overcome the gap in rankings.
Watson, the world number 72, began with a 57-minute 6-1 6-1 win over Ines Murta, ranked 546th.
World number 10 Konta then saw off 246th-ranked Michelle Larcher de Brito 6-2 6-4 to clinch the tie. Jocelyn Rae and Laura Robson will play De Brito and Murta in the concluding doubles match.
"I'm really happy to have got the match under my belt," said Konta. "It was a high-level match, and it got better and better as the match went on. She made me work for it in the end and I'm really happy to have come through for the team.
"We'll try to come back stronger every day."
Asked about new captain Anne Keothavong, who replaced Judy Murray in the role at the end of last year, Konta added: "I think she is doing a tremendous job of bringing us together as a team.
"It's always a tricky one because we spend most of the year as individuals, so for her to do such a good job with us, it says a lot about her.
"We've got lots of team bonding in the evenings, lots of funny things going on."
Britain are likely to face the toughest test of the group stage on Thursday when they take on Latvia, led by world number 35 Jelena Ostapenko