He currently plays for Koninklijke HFC, wearing the number 4 shirt. He plays primarily as a Midfield. He stands at 189cm tall and weighs 71kg. His preferred foot is Right.

Across 21 appearances in the Netherlands Tweede Divisie 2025-2026, G. Vlak registered 0 goals and 1 assists, while completing 1 key passes out of 1 total passes with a passing accuracy of -.