GOLD COAST, Australia (REUTERS) - Australian boxer Taylah Robertson has secured the first medal of the Gold Coast Commonwealth Games - nine days before her first bout.

The 19-year-old from Queensland state's Sunshine Coast is guaranteed at least a bronze in the women's 51kg division after receiving a free pass to the semi-finals.

She has no quarter-final bout as only seven boxers are competing in the category and both losing semi-finalists receive bronzes.

"Can't wait to get in the ring and represent Australia on such a big sporting stage," Robertson, who has her semi-final on April 13, wrote in a post on her Facebook account.

Her coach Mark Evans said it was "just the luck of the draw".

"For some reason the numbers in that division were down. When you look at some of the boys' divisions, some of them have 24 to 26 boxers there," he told the local media.

"We've got a guaranteed bronze but I'm tipping that colour might change."