DEFENDER Alex Ballard has entered concussion protocols and will miss Port Adelaide's Round 10 clash at home.
Ballard fell heavily on her back during a contest late in the third quarter of Sunday's game against St Kilda.
The 19-year-old was assessed and cleared after the incident but reported delayed symptoms to medical staff after the game.
As per concussion protocols, players cannot return to play for at least 12 days after the incident occurred, and only once they have successfully obtained a medical clearance.
Liz McGrath, Maggie MacLachlan and Yasmin Duursma all remain in rehabilitation programs for their respective injuries.
Injury list
Alex Ballard, concussion (1-2 weeks)
Liz McGrath, ankle (1-2 weeks)
Maggie MacLachlan, shoulder (season)
Yasmin Duursma, glute (1 week)
