2018 Fed Cup Americas Zone Group I – play-offs

Main article: 2018 Fed Cup Americas Zone

The play-offs of the 2018 Fed Cup Americas Zone Group I were the final stages of the Group I Zonal Competition involving teams from the Americas. Using the positions determined in their pools, the seven teams faced off to determine their placing in the 2018 Fed Cup Americas Zone Group I. The winner of the promotion play-off advanced to World Group II play-offs, and the losers of the relegation play-off were relegated down to the Americas Zone Group II.

Pool results

Placing	Pool A	Pool B
1	Paraguay	Brazil
2	Colombia	Argentina
3	Chile	Venezuela
4	—	Guatemala

Promotion play-off

The first placed teams of the two pools were drawn in head-to-head rounds. The winner advanced to the World Group II play-offs.

Paraguay vs. Brazil

Paraguay 2	Club Internacional de Tenis, Asunción, Paraguay[1] 10 February Clay		Brazil 0
1 2 3 1 Montserrat González Nathaly Kurata 6 1 6 3     2 Verónica Cepede Royg Beatriz Haddad Maia 62 77 7 5 711 69   3 Verónica Cepede Royg / Montserrat González Beatriz Haddad Maia / Luisa Stefani       not played

Third place play-off

The runner-up teams of the two pools were drawn in head-to-head to determine the third and fourth placings.

Colombia vs. Argentina

Colombia 0	Club Internacional de Tenis, Asunción, Paraguay[2] 10 February Clay		Argentina 2
1 2 3 1 Juliana Valero Paula Ormaechea 1 6 4 6     2 María Paulina Pérez Stephanie Mariel Petit 4 6 4 6     3 María Paulina Pérez / Juliana Valero María Irigoyen / Catalina Pella       not played

Relegation play-offs

The bottom team of Pool A and the third placed team of Pool B were drawn in head-to-head. The loser was relegated down to Americas Zone Group II in 2019. The last placed team of Pool B (Guatemala) was automatically relegated.

Chile vs. Venezuela

Chile 2	Club Internacional de Tenis, Asunción, Paraguay[3] 10 February Clay		Venezuela 0
1 2 3 1 Alexa Guarachi Aymet Uzcátegui 77 63 6 2     2 Fernanda Brito Andrea Gámiz 6 3 6 3     3 Fernanda Brito / Alexa Guarachi Andrea Gámiz / Adriana Pérez       not played

Final placements

Placing	Teams
Promoted/First	Paraguay
Second	Brazil
Third	Argentina
Fourth	Colombia
Fifth	Chile
Relegated/Sixth	Venezuela	Guatemala

•  Paraguay was promoted to the 2018 Fed Cup World Group II play-offs.
•  Venezuela and  Guatemala were relegated to Americas Zone Group II in 2019.