The 2003 Campeonato Nacional Apertura Copa Banco del Estado was the 73rd Chilean League top flight tournament, in which Cobreloa won its sixth league title after eight years.[1]
Santiago Wanderers qualify to playoffs as best placed team despite having drawn with Unión San Felipe.
Colo-Colo and Huachipato qualified as best losers.
All sixteen first level teams took part in this tournament, plus -and only for this edition-, all sixteen second level teams took part as well. One of the qualified teams to the Copa Sudamericana coming from this division, Provincial Osorno.
Played on July 9 & 10, 2003
Played on July 13, 2003
Played on July 16 & 17, 2003
Universidad Católica & Provincial Osorno qualified to 2003 Copa Sudamericana
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