The 2005–06 Argentine First Division Apertura was a nail biter. After a head-to-head finish in the last weeks Boca Juniors took the trophy home. Gimnasia de La Plata will have to wait for their first-ever championship. The 2005–06 Argentine First Division Clausura saw Boca Juniors become the first team since River Plate in 1999–2000 to win the Apertura and the Clausura in the same season. This capped an amazing year for Boca, as they won every tournament they were eligible (they were not eligible for the Copa Libertadores after a dismal Clausura last season). Lanús were the big surprise of the Clausura, as they finished second in the league. Boca also achieved 80 points in a season for the first time since 1998/99 when they scored 89 points.