 After persistent hamstring and calf issues prevented him from making his St Kilda debut until round 14 of the 2019 season, Hannebery was among his side's best in his first game for the club, a 56-point loss to the at Marvel Stadium.His best game for the year came in the round 23 loss to his former side Sydney at the SCG, when he accumulated 28 disposals to be best afield for St Kilda.In October, Hannebery fractured his foot when he slipped on the stairs at his sister's house in Perth, and required surgery.