Hawthorn Physical Performance Manager Luke Boyd has confirmed Jacob Koschitzke suffered an AC joint injury in the side's draw with Richmond on Saturday.
After a stellar first season of AFL football in which he kicked the second-most goals of any Hawk, Koschitzke endured some rotten luck with his injury coming in the final quarter of the final game of the year.
Mitchell named in 40-man All Australian squad
Watch the full AIA Injury Update below for more details on Koschitzke as well as Luke Breust and James Sicily.
Jacob Koschitzke - shoulder - TBC
Will Day - ankle - season
Jack Gunston - back - season
Changkuoth Jiath - PCL - season
Jarman Impey - ankle - season
James Sicily - knee - season