GEELONG, AUSTRALIA - MAY 4: Phil Davis of the Giants looks dejected after a loss during the 2018 AFL round seven match between the Geelong Cats and the GWS Giants at GMHBA Stadium on May 4, 2018 in Geelong, Australia. (Photo by Adam Trafford/AFL Media/Getty Images)

Greater Western Sydney Giants star defender Phil Davis is set to miss up to three months with a hamstring injury in an enormous blow for the club.

The Giants have started the season with a pair losses by a combined margin of 56 points, and things aren't about to get any easier with Davis injuring himself during the second quarter of Sunday's clash with Richmond.

Already conceding 110.5 points per game across the first two weeks of the season, the Giants will be sweating on turning things around this weekend against the Gold Coast Suns.

According to an report, Davis has suffered a Grade 3 tear which will sideline him for at least eight weeks, but potentially up to 12.

The club are yet to decide whether Davis will need surgery, with medical experts to be consulted this week before a decision is made. It's understood however that the decision on whether to have surgery or not won't change the amount of time he is set to be sidelined for.

Even an eight-week recovery would mean Davis wouldn't return before Round 11, with a 12-week recovery likely to set him back to Round 15.

David has only managed 21 games since the 2019 grand final, struggling with a calf injury and concussion since then.

Daniel Lloyd and Toby Greene also find themselves on the sideline with a broken arm and suspension respectively, putting further pressure on the Giants as they search for their first win of the season.

The Giants clash with the Suns will be held at Homebush on Saturday afternoon, with the first bounce set for 4:35pm (AEDT).