The Czech Republic has been the dominant team in the Fed Cup in the last eight years or so, winning five of the last seven titles and looking good to add another one on Sunday after taking a 2-0 lead over the defending champions United States of America in front of the packed O2 Arena in Prague!
The Czechs won the Fed Cup in five of the previous seven years, and Kvitova contributed to each one to sit fourth among women with the most Fed Cup trophies.
Siniakova, the world number 31, then saw off 63rd-ranked Riske 6-3, 7-6 (7/2).
The Czechs are one win away from their sixth title in eight years.
She came close but was denied two matchpoints by doubles expert Siniakova, who stepped into singles play with world number eight Karolina Pliskova out with injury and twice Wimbledon champion Petra Kvitova sick.
The American teenager gave her best to earn her first Fed Cup win but she had no strength for one last push in the deciding set, handing Strycova her 22nd Fed Cup triumph (she made a debut when Sofia was three-year-old).
"We can only be aggressive and go after it tomorrow", Riske said.
In doubles, the last match of the final, Riske and Danielle Collins are scheduled to meet No. 1-ranked pair Barbora Krejcikova and Siniakova.
Siniakova looked ready to cruise through after getting a break point in Kenin's first service game.
The Czechs were without their two top players against a United States team who were the defending champions but were also missing their stars and fielding three tournament newcomers, including Kenin.
It is an 11th overall title for the Czechs, five of which came as the former Czechoslovakia, a haul second only to the U.S. and their record of 18.
The US have dominated the Czechs in Fed Cup play and hold a 10-2 record against their final opponents. No63 Alison Riske makes up the number: She has played just three Fed Cup rubbers, with her only win coming in singles against Andrea Petkovic in the 2017 quarter-finals.
"I think I definitely do like the court a lot and any time that I'm indoors".
But the 32-year-old Strycova called on all her experience, bringing the home crowd back into the match by racing ahead 3-0 in the second set and securing the set four games later with a big serve that Kenin returned high and long.