"I am very relieved".
Julia Goerges had earlier beaten Karolina Pliskova 6-4 6-2 to give Germany renewed hope after the Czechs took a 2-0 lead on Saturday when Kvitova beat Goerges and Pliskova defeated struggling former world number one Kerber. "We had a great position from yesterday, I think Julia played a really good match".
Barbora Strycova and Katerina Siniakova clinched the doubles dead rubber after Goerges, paired with Anna-Lena Groenefeld, retired injured at the end of the first set, which the Germans lost 7-5.
BC-TEN-Germany-Czech-Republic, 2nd Ld-Writethru, 234 Kvitova beats Kerber to send Czechs back into Fed Cup finalAP Photo XSTU105, XSTU106, XSTU104, XSTU101, XSTU102Eds: Updates with doubles result, quote; corrects Germany played final in 2014, not title win.
Madison Keys battled past Pauline Parmentier of France 7-6 (4) 6-4 to lead the US into their second consecutive Fed Cup final in Aix-en-Provence on Sunday.
The defending champions have drafted in Madison Keys to replace CoCo Vandeweghe in the following singles rubber against Pauline Parmentier.
Two-time Grand Slam victor Angelique Kerber faced Kvitova in the fourth rubber later Sunday, aiming to ensure the tie is decided by the doubles match.
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The 13th-ranked Keys, a late replacement for Vandeweghe, came back from a 4-1 deficit in the first set and made the decisive break in the ninth game of the second set with two consecutive winners.
"We all know that was a great opportunity for us", she added, as the Germans missed out on a first appearance in the Fed Cup final since 2014.
Kvitova didn't give Kerber, a two-time Grand Slam victor, a chance, hitting seven aces and converting five of the six break opportunities she created. The Frenchwoman had the chance to break back while trailing 5-4 in the second set but Keys used her big serve to win the next three points and seal the match. Her fantastic performance followed the same path as she sealed the win 62 60 in only 54 minutes.
Keys, who was a late replacement for CoCo Vandeweghe, then stepped up to conquer Pauline Parmentier in a 7-6 6-4 victory to send the USA through to their second consecutive final.
But Germany had never recovered from 2-0 down before, and the Czechs had never let a 2-0 lead slip.
Miyu Kato and Makoto Ninomiya beat Johanna Konta and Heather Watson 3-6, 6-3, 6-3 in doubles on Sunday to give Japan a 3-2 win over Britain in their Fed Cup World Group playoff.