SYDNEY, AUSTRALIA - APRIL 09: Aidan Corr of the Giants and Callum Sinclair of the Swans contest the ball during the round three AFL match between the Sydney Swans and the Greater Western Sydney Giants at Sydney Cricket Ground on April 9, 2016 in Sydney, Australia. (Photo by Cameron Spencer/Getty Images)

Promising Giants’ key defender Aidan Corr will miss the next three to four weeks with an ankle injury.

Corr suffered the injury in the first quarter of the Giants’ loss to Sydney on Saturday night, however, he managed to play out the match, collecting 25 disposals.

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He has been diagnosed with a deltoid ligament strain, which is the same injury that ended ruckman Shane Mumford’s season last year, although it is far less significant.

Last year the 21-year-old enjoyed his best season in AFL since being drafted with pick No.14 in the 2012 National Draft, playing 19 games.