Dan Norton burns Carlin Isles on day one of London Sevens

England's Dan Norton smoked Carlin Isles and team USA with his near length-of-field try from day one action of the London Sevens.  The crowd at Twickenham were treated to the sight most fans long for, that of stars Norton and Isles clocking in at 37 km/h in an all-sprint down the field. The chase and score certainly didn't disappoint. With his subtle change of direction for the score, it was Norton who came up the winner. No doubt Norton will remember being burned himself earlier in the year by speedster Perry Baker at the USA Sevens in Las Vegas and will be happy to have gotten some redemp…