This is the Bonus Cache for the Adventure Lab "Legends of the Baggy Green'
You can find it here
The MCG is a magnet for tourists worldwide and the statues reinforce the association between the elite sportsmen and women who have competed here and the stadium that rejoiced in their performances. The Avenue of Legends surround the ground and the Parade of Champions lead to the ground from Wellington Avenue.
After you have had a stroll, completed the Adventure Lab and paid attention to the Journals, you can find the cache at
S 37 4P.H(Q+B)R E 144 5M.D(C+J)(F-G)
It is not a difficult hide, just reach in