Andrea Collarini leads 4 to 2 over 6 singles meetings since 2021. Last meeting on 11/03/2026 at Santiago Challenger.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 11/03/2026 | Santiago Challenger | Round 2 | clay | Olivieri | 6-1 4-6 7-6(5) |
| 26/03/2025 | Concepcion Challenger | Round 2 | clay | Olivieri | 7-6(3) 6-7(5) 3-6 |
| 17/01/2023 | Piracicaba Challenger | Round 1 | clay | Collarini | 6-3 6-5 |
| 30/04/2022 | Buenos Aires 2 Challenger | Semi-final | clay | Collarini | 4-6 1-6 |
| 30/11/2021 | Sao Paulo Challenger | Round 1 | clay | Collarini | 6-2 6-6 |
| 18/10/2021 | Buenos Aires Challenger | Round 1 | clay | Collarini | 2-6 6-4 5-7 |
| clay | Collarini 4 - 2 Olivieri |
| 2026 | Collarini 0 - 1 Olivieri |
| 2025 | Collarini 0 - 1 Olivieri |
| 2023 | Collarini 1 - 0 Olivieri |
| 2022 | Collarini 1 - 0 Olivieri |
| 2021 | Collarini 2 - 0 Olivieri |
168 wins, 165 losses since 2021 (50.5%).
Last matches: D V D D V
169 wins, 161 losses since 2021 (51.2%).
Last matches: D D V D V
Andrea Collarini leads 4 to 2 over 6 singles meetings since 2021.
On 11/03/2026, at Santiago Challenger (Round 2): Genaro Alberto Olivieri won 6-1 4-6 7-6(5).