British speedway rider Tai Woffinden is defending his world title this year . `` I did n't actually realize that I 'd won the championship when I crossed the finish line , the TV presenter was hanging over the fence going , ' The 23-year-old has won the World Under-21 Championship in 2010 and was runner-up at last year's European Championships. The 23-year-old 's father , also his racing mentor , passed away in 2010 . He keeps his memory alive through one of his many tattoos .
British speedway rider Tai Woffinden is defending his world title this year . The 23-year-old has won the World Under-21 Championship in 2010 and was runner-up at last year's European Championships. The 23-year-old 's father , also his racing mentor , passed away in 2010 . He keeps his memory alive through one of his many tattoos .