He currently plays for AFC Toronto (W), wearing the number 16 shirt. At the international level, he represents Canada Women U20. He plays primarily as a Midfield.

Across 2 appearances in the CONCACAF U17 Women's Championship 2025-2026, O. Chisholm registered 2 goals and 1 assists, while completing 7 key passes out of 115 total passes with a passing accuracy of 49.