See main article: Mubadala World Tennis Championship.
The 2019 Mubadala World Tennis Championship was a non-ATP/WTA-affiliated exhibition tennis tournament. It was the 12th edition of the Mubadala World Tennis Championship with the world's top players competing in the event, held in a knockout format. The winner received $250,000 prize money. The event was held at the International Tennis Centre at the Zayed Sports City in Abu Dhabi, United Arab Emirates.[1] [2] It served as a warm-up event for the season, with the ATP World Tour beginning on January 3, 2020.
Rafael Nadal (world number 1) and Novak Djokovic (number 2) received byes to the semi-final.
Rafael Nadal def. Stefanos Tsitsipas 6–7(3–7), 7–5, 7–6(7–3)
Maria Sharapova def. 
Ajla Tomljanović 6–4, 7–5| Country | Player | Ranking | Seeding | |
|---|---|---|---|---|
| Spain | Rafael Nadal | 1 | 1 | |
 Serbia | Novak Djokovic | 2 | 2 | |
| Stefanos Tsitsipas | 6 | 3 | ||
| Russian Federation | Karen Khachanov | 17 | 4 | |
| Russian Federation | Andrey Rublev | 23 | 5 | |
 Korea, Republic of | Hyeon Chung | 128 | 6 |
Before the tournament
Daniil Medvedev → replaced by Karen Khachanov
Gaël Monfils → replaced by Andrey Rublev| Country | Player | Ranking | Seeding | |
|---|---|---|---|---|
| Australia | Ajla Tomljanović | 51 | 1 | |
| Russian Federation | Maria Sharapova | 131 | 2 |