| Month | Matches | Mins | G | A | G+A | G/M | Rating |
|---|---|---|---|---|---|---|---|
Aug 2026 | 5 | 103 | 0 | 1 | 1 | 0.00 | 6.66 |
Jul 2026 | 4 | 73 | 1 | 1 | 2 | 0.25 | 7.04 |
Jun 2026 | 3 | 74 | 0 | 0 | 0 | 0.00 | 6.46 |
May 2026 | 4 | 168 | 2 | 0 | 2 | 0.50 | 6.89 |
Apr 2026 | 3 | 86 | 0 | 0 | 0 | 0.00 | 6.46 |
Oct 2025 | 3 | 211 | 2 | 0 | 2 | 0.67 | 7.14 |
Sep 2025 | 2 | 94 | 1 | 0 | 1 | 0.50 | 6.82 |
| Season | League | Apps | Min | Goals | Assists | G+A / 90 | Rating |
|---|---|---|---|---|---|---|---|
| 2025 | Besta deild | 18 | 898 | 7 | 0 | 0.7 | 6.81 |
| 2026 | Besta deild | 19 | 504 | 3 | 2 | 0.89 | 6.71 |
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 2026-09-15
Player stats against each opponent club
| Team | MP | W | D | L | G | A | ||
|---|---|---|---|---|---|---|---|---|
 Breidablik | 3 | 2 | 1 | 0 | 1 | 0 | 0 | 0 |
 KR Reykjavík | 3 | 0 | 1 | 2 | 0 | 0 | 0 | 0 |
 ÍBV | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 |
 Víkingur Reykjavík | 2 | 0 | 0 | 2 | 1 | 0 | 0 | 0 |
 Valur | 2 | 2 | 0 | 0 | 1 | 0 | 0 | 0 |
 KA Akureyri | 2 | 1 | 1 | 0 | 0 | 1 | 0 | 0 |
 Stjarnan | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 |
 Thór | 2 | 1 | 0 | 1 | 1 | 1 | 0 | 0 |
 ÍA | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Vestri | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Keflavík | 1 | 0 | 1 | 0 | 0 | 0 | 1 | 0 |
 FH | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
 Afturelding | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
The 2026 Besta deild line for J. Byström: 19 appearances (504 minutes), 3 goals, 2 assists — 0.89 goal involvements per 90. That season graded out at an average match rating of 6.71.
His recorded league career runs from 2025 to 2026: 2 seasons, all with a single club. His ratings range from 6.71 (2026) up to 6.81 in 2025, Besta deild.
