Fed Cup: Spain beat Japan as Germany, Belarus, Switzerland & Belgium also qualify
Carla Suarez Navarro completed Spain's win over Japan to secure the five-time champions' place in the Fed Cup Finals.
Suarez Navarro, who will retire this year, beat Kurumi Nara 6-1 6-3 to secure a 3-1 win in Cartagena, Murcia.
They will be joined in April's inaugural 12-nation Finals by Russia, who beat Romania 3-2 thanks to victory in the deciding doubles rubber.
Germany are also through, beating Brazil 4-0 without dropping a set in three singles and one doubles match.
Belarus were tied 2-2 with the Netherlands before Aryna Sabalenka and Aliaksandra Sasnovich won the deciding doubles rubber in a dramatic third-set tie-break to win 3-2.
Switzerland and Belgium also qualified for the Finals in Budapest with 3-1 victories over Canada and Kazakhstan respectively.
Australia, France, Czech Republic and hosts Hungary had already qualified.
With Slovakia also through following their 3-1 victory over Great Britain, the remaining place will be filled by the United States or Latvia.
The US lead their tie 2-0 after Serena Williams beat Jelena Ostapenko on Friday.
Williams puts US in control
In Everett, Washington, 23-time Grand Slam champion Williams defeated 2017 French Open winner Ostapenko 7-6 (7-4) 7-6 (7-3) overnight to put the US in a dominant position in their qualifying tie.
That came after newly crowned Australian Open champion Sofia Kenin beat Anastasija Sevastova 6-2 6-2 in the first rubber.
"It's been a long journey. It wasn't easy," said world number seven Kenin.
"But I was super happy to come here and play with the team."
Williams added: "I'm really proud of being able to get the win for the team. I'm really excited that I was able to go through it.''
The qualifier continues from 23:30 GMT with Kenin taking on Ostapenko in the third rubber.