Complex sentence: Haroon Rahim, (born 12 November 1949), the former Pakistan and Asian number one, was the youngest tennis player ever to play for Pakistan in the Davis Cup at 15 years of age.
Split into simpler sentences: Haroon Rahim, (born 12 November 1949) is a Pakistani former tennis player. The former Pakistan and Asian number one, Rahim was the youngest tennis player ever to play for Pakistan in the Davis Cup at 15 years of age.