CARIFTA medallist Aren Spencer boosted his chances of selection for the World Junior Track & Field Championships with a lifetime best leap of 7.59 metres in the Under-20 Boys’ long jump during the President’s Classic at the Usain Bolt Sports Complex on Saturday. Competing for Velocity Management, Spencer surpassed the provisional standard of 7.55 metres for the international junior championship which will be held in Cali, Colombia, August 2-7. The …