Complex sentence: Gopichand suffered a ligament rupture in the year 1986 when he was just 13 years old, although he had won the Singles and the Doubles title at the Inter School Competition the same year.
Split into simpler sentences: Gopichand suffered a ligament rupture in the year 1986 when he was 13. He had won the Singles and the Doubles title at the Inter School Competition the same year.