The Ukrainian had hit a wall, physically and mentally, before the WTA Finals.
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2018 |
US Open WTA
|
Final | Naomi Osaka |
2-6
4-6 |
| 2018 |
US Open WTA
|
Semi Finals | Serena Williams |
6-3
6-0 |
| 2018 |
US Open WTA
|
Quarter Finals | Serena Williams |
6-4
6-3 |
| 2018 |
US Open WTA
|
1/8 | Serena Williams |
0-6
6-4 3-6 |
| 2018 |
US Open WTA
|
1/16 | Serena Williams |
6-1
6-2 |
| 2018 |
US Open WTA
|
1/32 | Serena Williams |
6-2
6-2 |
| 2018 |
US Open WTA
|
1/64 | Serena Williams |
6-4
6-0 |
| 2018 |
Western & Southern Open
|
1/16 | Petra Kvitova |
6-3
2-6 6-3 |
| 2018 |
Western & Southern Open
|
1/32 | Serena Williams |
1-6
2-6 |
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2018 |
Wimbledon WTA
|
1/64 | Anett Kontaveit |
2-6
2-6 |
| 2018 |
Nature Valley Classic, Qualification
|
1/16 | Jennifer Brady |
6-4
4-6 6-7 |
| 2018 |
Nature Valley Open
|
1/8 | Naomi Osaka |
6-3
6-2 |
| 2018 |
Nature Valley Open
|
1/16 | Denisa Allertova |
6-3
6-1 |
