Berretini had never reached a tour-level quarterfinal before this week.
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2018 |
St. Petersburg Open
|
1/16 | Matteo Berrettini |
6-7
6-2 3-6 |
| 2018 |
US Open ATP
|
1/64 | Denis Kudla |
6-4
7-5 6-2 |
| 2018 |
Winston-Salem Open
|
1/8 | Hyeon Chung |
6-3
3-6 6-3 |
| 2018 |
Winston-Salem Open
|
1/16 | Matteo Berrettini |
7-5
6-3 |
| 2018 |
Winston-Salem Open
|
1/32 | Matteo Berrettini |
6-3
6-3 |
| year | Event | RND | Winner | Results |
|---|---|---|---|---|
| 2018 |
US Open, Qualification ATP
|
1/64 | Ivo Karlovic |
3-6
6-7 |
| 2018 |
Western & Southern Open, Qualification
|
1/14 (Special Qual) | Ivo Karlovic |
7-6
6-3 |
