What happened: CONMEBOL has officially approved Estadio Codelco El Teniente in Rancagua as the venue for the second leg of the Copa Sudamericana playoff between O'Higgins and Boca Juniors. The governing body granted a special exception for the 14,000-seat stadium, which typically falls below the 20,000-capacity requirement for this tournament phase.

Why it matters: The decision provides O'Higgins with a critical home-field advantage against the Argentine giants after weeks of venue uncertainty. Boca Juniors remains a heavy favorite in the tie, but playing in Rancagua avoids a neutral-site relocation that would have penalized the Chilean hosts during their first continental knockout appearance in years.

What to watch: O'Higgins will travel to Buenos Aires for the first leg next month before returning to Rancagua to decide the series.