I'm honestly not sure I can think of anyone in sports who has a stronger mentality. It's such a simple thing in the end - get that one dart in the double 20. But there's hundreds of thousands of pounds riding on it. And a prestigous trophy. And a massive career goal. And he's 17 years old. That pressure would have my hands shaking so much I couldn't hold on to a dart, let alone place it perfectly, dead centre in the double 20. And he felt that pressure, no doubt, but he did it anyway.
