| Season | League | Apps | Min | Goals | Assists | G+A / 90 | Rating |
|---|---|---|---|---|---|---|---|
| 2018 | Pepsideild | 7 | 121 | 0 | 0 | 0 | — |
| 2019 | Pepsideild | 17 | 617 | 3 | 0 | 0.44 | — |
| 2020 | Pepsideild | 17 | 1386 | 4 | 2 | 0.39 | — |
| 2021 | Eliteserien | 21 | 695 | 0 | 1 | 0.13 | 6.74 |
| 2022 | Eliteserien | 25 | 1453 | 4 | 4 | 0.5 | 6.97 |
| 2023 | 1. Division | 20 | 1633 | 7 | 7 | 0.77 | 7.69 |
| 2024 | Eliteserien | 8 | 533 | 1 | 0 | 0.17 | 7.09 |
| 2024/2025 | Eredivisie | 29 | 946 | 4 | 1 | 0.48 | 6.91 |
| 2025/2026 | Eredivisie | 28 | 1281 | 6 | 0 | 0.42 | 6.74 |
Domestic league competitions only (SportMonks sub_type='domestic'); national-team, continental and cup competitions are excluded. Classification resolved by league id against the canonical leagues index. G+A/90 computed from minutes actually played.
Figures computed from the GioScore season-stats database · as of 2026-07-24
Player stats against each opponent club
| Team | MP | W | D | L | G | A | ||
|---|---|---|---|---|---|---|---|---|
 AZ | 5 | 1 | 1 | 3 | 0 | 0 | 0 | 0 |
 Vålerenga | 5 | 4 | 0 | 1 | 1 | 0 | 1 | 0 |
 Sarpsborg 08 | 5 | 2 | 1 | 2 | 0 | 0 | 1 | 0 |
 Tromsø | 5 | 1 | 3 | 1 | 0 | 0 | 1 | 0 |
 Haugesund | 4 | 0 | 0 | 4 | 0 | 0 | 0 | 0 |
 Molde | 4 | 1 | 0 | 3 | 0 | 0 | 2 | 0 |
 Strømsgodset | 4 | 1 | 1 | 2 | 1 | 0 | 1 | 0 |
 Sandefjord | 4 | 2 | 0 | 2 | 1 | 0 | 0 | 0 |
 NAC Breda | 4 | 2 | 2 | 0 | 0 | 0 | 1 | 0 |
 PSV | 4 | 0 | 0 | 4 | 1 | 0 | 0 | 0 |
 Sparta Rotterdam | 4 | 1 | 0 | 3 | 0 | 0 | 1 | 0 |
 Odd | 4 | 2 | 2 | 0 | 0 | 1 | 1 | 0 |
 PEC Zwolle | 4 | 0 | 3 | 1 | 0 | 0 | 0 | 0 |
 SC Heerenveen | 4 | 3 | 0 | 1 | 2 | 0 | 1 | 1 |
 Rosenborg | 4 | 1 | 1 | 2 | 0 | 0 | 1 | 0 |
 Fortuna Sittard | 4 | 2 | 0 | 2 | 1 | 0 | 0 | 0 |
 Lillestrøm | 4 | 2 | 1 | 1 | 0 | 0 | 0 | 0 |
 FC Twente | 3 | 0 | 1 | 2 | 0 | 0 | 0 | 0 |
 Ajax | 3 | 1 | 1 | 1 | 0 | 0 | 1 | 0 |
 Go Ahead Eagles | 3 | 0 | 2 | 1 | 1 | 0 | 0 | 0 |
Player stats against each opponent national team
| Team | MP | W | D | L | G | A | ||
|---|---|---|---|---|---|---|---|---|
 France | 2 | 0 | 1 | 1 | 0 | 0 | 0 | 0 |
 Wales | 2 | 0 | 1 | 1 | 0 | 0 | 0 | 0 |
 Italy U21 | 2 | 0 | 0 | 2 | 0 | 0 | 1 | 0 |
 Canada | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
 Honduras | 1 | 1 | 0 | 0 | 1 | 0 | 0 | 0 |
 Guatemala | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Azerbaijan | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 |
 Ukraine | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Turkey | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Haiti | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
 Montenegro | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 England U19 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Sweden U21 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Denmark U21 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Armenia U21 | 1 | 1 | 0 | 0 | 1 | 1 | 0 | 0 |
 Russia U21 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 France U21 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Republic of Ireland U21 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Turkey U19 | 1 | 1 | 0 | 0 | 1 | 0 | 0 | 0 |
 Moldova U19 | 1 | 0 | 1 | 0 | 0 | 0 | 1 | 0 |
All of Brynjólfur Willumsson's 2025/2026 Eredivisie output came as goals: 6 goals in 28 games (1,281 minutes) — 0.42 goal involvements per 90. His average match rating for that season computes to 6.74.
No season rated higher than 2023 (7.69, 1. Division); none lower than 2021 (6.74). His last two rated seasons average 0.3 below his earlier career level.
