Korfball teenager Isla Hedderman has earned an international call-up. Hedderman will represent England under-15s at a tournament in the Czech Republic this month. The 14-year-old, from Greenhithe, was selected after impressing at regional academy level and is off to Prague for the competition which runs from July 11-14. Hedderman, a Year 9 pupil at Fort Pitt Grammar School for Girls in Rochester, also trains in Medway as a member of Tornadoes Korfball Club and Academy. Speaking of her England selection, Tornadoes chairman Richard Woodham said: “It’s very exciting. She’s been with us for a coup…