Player stats against each opponent club
| Team | MP | W | D | L | G | A | ||
|---|---|---|---|---|---|---|---|---|
 Thróttur Reykjavík | 5 | 3 | 1 | 1 | 0 | 0 | 1 | 0 |
 Fylkir | 4 | 1 | 0 | 3 | 0 | 0 | 2 | 0 |
 Grindavík | 4 | 1 | 1 | 2 | 1 | 0 | 1 | 0 |
 ÍA | 3 | 0 | 0 | 3 | 0 | 0 | 0 | 0 |
 Fram | 3 | 3 | 0 | 0 | 3 | 0 | 0 | 0 |
 Fjölnir | 3 | 3 | 0 | 0 | 1 | 0 | 0 | 0 |
 KR Reykjavík | 3 | 2 | 0 | 1 | 0 | 0 | 1 | 1 |
 Thór | 3 | 0 | 1 | 2 | 0 | 0 | 0 | 0 |
 Njardvík | 3 | 0 | 0 | 3 | 0 | 0 | 1 | 0 |
 Víkingur Reykjavík | 2 | 1 | 0 | 1 | 0 | 0 | 0 | 0 |
 Breidablik | 2 | 0 | 0 | 2 | 0 | 0 | 0 | 0 |
 Vestri | 2 | 0 | 1 | 1 | 0 | 0 | 0 | 0 |
 Stjarnan | 2 | 1 | 0 | 1 | 0 | 0 | 1 | 0 |
 Leiknir Reykjavík | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 |
 Keflavík | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 |
| Selfoss | 2 | 1 | 0 | 1 | 1 | 0 | 1 | 0 |
 Norwich U18 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 |
 KA Akureyri | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Völsungur | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 FH | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
Player stats against each opponent national team
| Team | MP | W | D | L | G | A | ||
|---|---|---|---|---|---|---|---|---|
 Norway U19 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
 Greece U19 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
 Spain U19 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
Thorsteinn Antonsson plays as a defender for HK. Throughout his career, Thorsteinn Antonsson has scored 8 goals and provided 2 assists in 61 appearances across 2 clubs. Thorsteinn Antonsson brings experience and reliability to the backline with 61 professional appearances under his belt. Among the clubs he has represented — HK, Selfoss — Thorsteinn Antonsson was most prolific at HK, where he scored 6 goals in 35 appearances.
