Dan Hannebery will spend additional time on the sidelines following an injury set back at training.
Scans confirmed a right calf injury for the 31-year-old midfielder which occurred while completing a training block at RSEA Park on Saturday morning.
“This is clearly a disappointing start to the 2022 Season for Dan,” said St Kilda’s Head of Football David Rath.
“Given his recent history with soft tissue injuries, Dan has been working closely with the high performance and medical team to slowly build his load and he had been making some promising steps towards a return.
“While this isn’t ideal, we know Dan will approach this next phase of rehabilitation with complete professionalism.
“Our medical team are working through those next steps with Dan, but our primary focus at this moment is on supporting him through this.”