The Czech Republic won their sixth Fed Cup title in eight years as an emotional Katerina Siniakova clinched a 3-0 win over the United States with an epic victory against Sofia Kenin.
Siniakova fought back tears as she saved two match points, then took a second of her own to win 7-5 5-7 7-5.
The victory, which took Siniakova almost four hours, gave the home team an unassailable 3-0 lead in Prague.
Siniakova and Barbora Strycova won Saturday's opening-day singles matches.
The US were aiming to become the first team to fight back from a 2-0 deficit in a Fed Cup final, but 19-year-old Kenin was unable to take her opportunities at 5-4 to keep the tie alive.