Irish paralympian Michael McKillop became the first male athlete to set a new world record in the London 2012 Olympic Stadium on Tuesday.
The Glengormley athlete ran 3:59.54 minutes in the 1500m at the Visa London Disability Athletics Challenge, easily beating his previous best of 4:14.81.
"It's nice to be here and breaking a world record. I'm happy to be the first male to do it in the stadium," he said.
McKillop, who is the current 800m and 1500m world champion, led home a field of T20 and T37 athletes.
He was competing in the 80,000 seater Olympic Stadium for the first time ahead of this summer's Paralympic Games.
"It was incredible and enjoyable and an experience I wanted to get out of my system," added McKillop.
"It's one of those things - you want to walk into a stadium for the Paralympic final without worrying or thinking 'oh my god the stadium is huge' or 'the track is bigger'.
"It's only a 400m track with lots of seats around it basically, so it's similar to where I train which is also a 400m track. I've just got to get used to it."
McKillop will start as overwhelming favourite for the 800m and 1500m T37 events at London 2012.