New Zealand fly-half/fullback Oscar Koller played in Major League Rugby during the 2024 season. He represented Anthem RC for his entire MLR career.

The Auckland native played for the First XV at Takapuna Grammar School, also playing with the North Harbour U18 side and earning a rugby scholarship to Lincoln University which he attended between 2019-2021. In 2023 he moved up to the North Harbour NPC squad, and from there joined Anthem RC for their inaugural MLR season in 2024.

Koller scored 45pts in 12 games during Anthem’s tough inaugural season, and was comfortably in the Top 10 points scorers for the first half of the season, also gaining just shy of 600m with ball in hand. In May 2024, North Harbour confirmed that Koller would return for their 2024 NPC campaign following the conclusion of the MLR season.