Complex sentence: The following campaign proved excellent, as the club was always in the top positions: on 13 June 2009, after beating SD Huesca 2--1 at home, it achieved promotion to the top division for the first time in its history.
Split into simpler sentences: The following campaign proved excellent, as the club was always in the top positions. On 13 June 2009, after beating SD Huesca 2--1 at home, it achieved promotion to the top division for the first time in its history.