Rounds with the biggest score swings vs the player's previous round (raw score).
| Pl | TEG | Round | Course | Year | Sc | Previous Rd | Change |
|---|---|---|---|---|---|---|---|
| SN | TEG 15 | 3 | Penha Longa | 2022 | 92 | 115 | -23 |
| JP | TEG 17 | 3 | Royal Óbidos | 2024 | 94 | 116 | -22 |
| JP | TEG 13 | 3 | Littlestone | 2020 | 83 | 105 | -22 |
| SN | TEG 8 | 4 | Oitavos Dunes | 2015 | 95 | 114 | -19 |
| DM | TEG 16 | 4 | Estoril | 2023 | 80 | 98 | -18 |
| JB | TEG 15 | 3 | Penha Longa | 2022 | 85 | 101 | -16 |
| DM | TEG 17 | 2 | West Cliffs | 2024 | 82 | 97 | -15 |
| AB | TEG 9 | 2 | Praia D'El Rey | 2016 | 100 | 115 | -15 |
| SN | TEG 8 | 2 | Penha Longa | 2015 | 99 | 114 | -15 |
| SN | TEG 5 | 2 | Boavista | 2012 | 82 | 97 | -15 |
| SN | TEG 7 | 4 | Praia D'El Rey | 2014 | 84 | 99 | -15 |