| Loss | 0–1 | [2015 Coupe Banque Nationale – Singles|] | Tournoi de Québec, Canada | International | Carpet | dts|Feb 2016
Doubles: 21 (11 titles, 10 runner-ups)| Result | W–L | Date | Tournament | Tier | Surface | Partner | Opponents | Score | | Win | 1–0 | [2017 St. Petersburg Ladies' Trophy – Doubles|] | St. Petersburg Trophy, Russia | Premier | Hard | 
ITF Circuit finalsSingles: 10 (7 titles, 3 runner-ups)| Result | W–L | Date | Tournament | Tier | Surface | Opponent | Score | | Win | 1–0 | Oct 2012 | ITF Stockholm, Sweden | 10,000 | Hard | 
Doubles: 9 (8 titles, 1 runner-up)| Result | W–L | Date | Tournament | Tier | Surface | Partner | Opponents | Score | | Win | 1–0 | Oct 2012 | ITF Stockholm, Sweden | 10,000 | Hard |  The tournaments won by Ostapenko are in boldface, and advanced into finals by Ostapenko are in italics.'
| Year | Australian Open | French Open | Wimbledon | US Open | | 2015 | did not play | did not qualify | wild card | qualifier | | 2016 | unseeded | 32nd | unseeded | unseeded | | 2017 | unseeded | unseeded ''' | 13th | 12th | | 2018 | 7th | 5th | 12th | 10th | | 2019 | 22nd | unseeded | unseeded | unseeded | | 2020 | unseeded | unseeded | cancelled | did not play | | 2021 | unseeded | unseeded | unseeded | did not play | | 2022 | 26th | 13th | 12th | 16th | | 2023 | 17th | 17th | 17th | 20th | | 2024 | 11th | 9th | 13th | 10th |
Best Grand Slam results detailsGrand Slam winners are in boldface, and runner–ups are in italics.''''
- Ostapenko has a 25–31 record against players who were, at the time the match was played, ranked in the top 10.
|
|
|
|
|