Wu Yize is champion of the world at just 22 years old (Picture: Getty Images) Wu Yize practices ‘like Ronnie O’Sullivan in Ilford back in the 90s,’ says Ken Doherty, who has witnessed the dedication of the world champion first hand. The 22-year-old became the second youngest world champion ever with his thrilling 18-17 win over Shaun Murphy at the Crucible earlier this month. It completed a stunning run to the title, which saw him down Lei Peifa…