Annika joined the Tides in June during the inaugural 2025 NSL season and quickly established herself as a key figure on the backline. The composed centre back appeared in 17 matches, completed 678 passes, and helped the team record two clean sheets, showcasing her leadership and organizational ability. A former captain at West Virginia University and Big 12 Champion, Leslie also represented Canada at youth international levels, earning bronze at the 2022 CONCACAF U-20 Championship and competing at the FIFA U-20 World Cup. Her calm presence, tactical intelligence, and ability to read the game made her an immediate stabilizing force for Halifax’s defence.