Great British athlete Dai Green has the "perfect temperament" to win 400m hurdles gold at the 2012 Olympic Games, according to coach Malcolm Arnold.
Greene, 25, claimed World Athletics Championships gold on Thursday in South Korea and Arnold believes that he is capable of repeating that feat in London next year.
"It's about winning and he's good at winning," said Arnold.
"He's got a sound temperament. Lots of very, very talented athletes don't rise to this occasion.
"Good athletes know how to win and you saw [on Thursday] how he executed really well. He's a good competitor."
Arnold has previously coached 110m hurdler Colin Jackson to a world gold medal.
