AFLW young gun Tyanna Smith will miss the coming season because of an ACL injury.
The Saints said the 19-year-old midfielder hurt her left knee at Saturday training and scans confirmed Smith is out for an extended spell.
"This is a very disappointing situation and we're all really feeling for Tyanna," Saints AFLW boss Tessie McManus said.
"Tyanna had been having a really promising pre-season, looking to build upon her great debut earlier this year."
Smith played nine games in her debut season, earning a Rising Star nomination, and she finished runner-up in the club best and fairest voting.
Anterior cruciate ligament injuries continue to be a major issue for the AFLW, with North Melbourne's Elisha King also suffering a season-ending injury last week.
Last month, the Saints announced their dual best-and-fairest winner Georgia Patrikios was having indefinite time away from the club.