2019 WTA Finals – Singles
Ashleigh Barty defeated the defending champion Elina Svitolina in the final, 6–4, 6–3 to win the singles tennis title at the 2019 WTA Finals. With the win, Barty became the fifth woman (after Serena Williams, Maria Sharapova, Petra Kvitová, and Dominika Cibulková) to win the tournament on debut.
| Singles | |
|---|---|
| 2019 WTA Finals | |
| Champion | Ashleigh Barty |
| Runner-up | Elina Svitolina |
| Score | 6–4, 6–3 |
| Draw | 8 (RR + elimination) |
| Seeds | 8 |
Barty won $4.42 million USD in prize money by claiming the title, the most prize money ever won by a player at a single tennis tournament, male or female. Barty secured the year-end world No. 1 ranking after playing her second round-robin match. Karolína Plíšková and Naomi Osaka were also in contention for the top ranking.
Barty, Bianca Andreescu, Belinda Bencic and Sofia Kenin (as an alternate replacing Andreescu) made their debuts in the event.
The tiebreak between Elina Svitolina and Karolína Plíšková in the round-robin stage, which Svitolina won 14–12, was the longest of the season.