Jack Grieves is a 22-year-old professional football player from ENG. He currently plays for Watford, wearing the number 43 shirt. He plays primarily as a Forward. He stands at 175cm tall and weighs 70kg. His current market value is estimated at 200K €.

His most recent move was a Loan from Ross County to Watford U21 on 2025-06-30.

In the English Football League Championship 2025-2026 season, Jack Grieves scored 0 goals and provided 0 assists across 5 appearances, averaging 0 goals per game with 0 shots attempted and 0 on target.