SINGLES
Winner (1): 2018 – San Jose.
Finalist (2): 2018 – Hobart, Prague.
DOUBLES
Winner (2): 2021 – Budapest (w/Stollar); 2018 – Strasbourg (w/Olaru).
Finalist (4): 2021 – Bogotá (w/Friedsam); 2018 – Prague (w/Marozava), Nottingham (w/Watson), Eastbourne (w/Begu).
ADDITIONAL
Romanian Fed Cup Team, 2006, 2009, 2012, 2018-19.
| Date | Rd | Match | Score | Time |
| 2021 | SF | Nuria Parrizas Diaz [ESP] d. Buzarnescu | 6-3 6-4 | 01:48 |
| 2021 | QF | Buzarnescu d. Anna Bondar [HUN] | 6-2 6-4 | 01:15 |
| 2021 | R16 | Buzarnescu d. (5)Anna Karolina Schmiedlova [SVK] | 6-2 6-2 | 01:13 |
| 2021 | R32 | Buzarnescu d. Zuzana Zlochova [SVK] | 6-2 6-1 | 00:53 |
SINGLES
Winner (1): 2018 – San Jose.
Finalist (2): 2018 – Hobart, Prague.
DOUBLES
Winner (2): 2021 – Budapest (w/Stollar); 2018 – Strasbourg (w/Olaru).
Finalist (4): 2021 – Bogotá (w/Friedsam); 2018 – Prague (w/Marozava), Nottingham (w/Watson), Eastbourne (w/Begu).
ADDITIONAL
Romanian Fed Cup Team, 2006, 2009, 2012, 2018-19.
| Date | Rd | Match | Score | Time |
| 2021 | SF | Nuria Parrizas Diaz [ESP] d. Buzarnescu | 6-3 6-4 | 01:48 |
| 2021 | QF | Buzarnescu d. Anna Bondar [HUN] | 6-2 6-4 | 01:15 |
| 2021 | R16 | Buzarnescu d. (5)Anna Karolina Schmiedlova [SVK] | 6-2 6-2 | 01:13 |
| 2021 | R32 | Buzarnescu d. Zuzana Zlochova [SVK] | 6-2 6-1 | 00:53 |