William Grainger is a professional footballer from WAL and is currently 18 years old. His main role on the pitch is Forward. His stronger foot is Right. His estimated market valuation currently stands at 100K €.

His latest transfer saw him join Sheffield Wednesday U18 from Sheffield Wednesday Youth via on 2024-07-01.

During the FA Cup 2025-2026 campaign, William Grainger made 1 appearances, scoring 0 goals and adding 0 assists. He averaged 0 goals per match from 0 shots, with 0 on target.