2018 Mubadala World Tennis Championship – Men's singles
# 2018 Mubadala World Tennis Championship – Men's singles

Kevin Anderson was the competition's defending champion, but lost in the final from Novak Djokovic.

## Seeds

* Novak Djokovic (champion)
* Rafael Nadal (semifinals) (withdrew from playing 3rd place play-off)
* Kevin Anderson (final) (runner-up)
* Dominic Thiem (quarterfinals) (fourth place)
* Karen Khachanov (semifinals) (third place)
* Hyeon Chung (quarterfinals) (fifth place)

## Draw

### Key

* Q = Qualifier
* WC = Wild card
* LL = Lucky loser
* Alt = Alternate
* SE = Special exempt
* PR = Protected ranking
* ITF = ITF entry
* JE = Junior exempt
* w/o = Walkover
* r = Retired
* d = Defaulted
* SR = Special ranking

### Draw

| Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final |
| - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| | | | | | 1 | Novak Djokovic | 6 | 6 | | | | | | |
| | | | | | 5 | Karen Khachanov | 4 | 2 | | | | | | |
| 4 | Dominic Thiem | $6^3$ | 3 | | 5 | Karen Khachanov | 4 | 2 | | | | | | |
| 5 | Karen Khachanov | $7^7$ | 6 | | | | | | | | | | | |
| 5 | Karen Khachanov | $7^7$ | 6 | | | | | | | 1 | Novak Djokovic | 4 | 7 | 7 |
| | | | | | | | | | | 3 | Kevin Anderson | 6 | 5 | 5 |
| 3 | Kevin Anderson | $6^4$ | 6 | 6 | | | | | | | | | | | 3 | Kevin Anderson | 6 | 5 | 5 |
| 6 | Hyeon Chung | $7^7$ | 2 | 1 | | | | | |
| 6 | Hyeon Chung | $7^7$ | 2 | 1 | 3 | Kevin Anderson | 4 | 6 | 6 | Third Place Match | Third Place Match | Third Place Match | Third Place Match | Third Place Match |
| | | | | | 2 | Rafael Nadal | 6 | 3 | 4 |
| | | | | | 2 | Rafael Nadal | 6 | 3 | 4 | 5 | Karen Khachanov | 6 | 4 | [10] |
| | | | | | | | | | | 4 | Dominic Thiem | 3 | 6 | [3] |

### Play-offs

| Fifth Place Match | Fifth Place Match | Fifth Place Match | Fifth Place Match | Fifth Place Match |
| - | - | - | - | - |
| 6 | Hyeon Chung | 6 | 6 | |
| 4 | Dominic Thiem | 2 | 3 | |
