West Coast are flying high following six straight wins, but their next three weeks could determine whether they are premiership contenders or pretenders.
The Eagles improved their record to 6-1 with their 42-point dismantling of Port Adelaide in Perth on Saturday.
But the AFL win came at a big cost, with Luke Shuey tearing his right hamstring just two minutes into the match.
Scans will determine the extent of the damage, with the Eagles hopeful it's not too serious.
West Coast were widely tipped to finish in the lower rungs of the ladder this season.
But they have defied the doom and gloom to become a strong contender for a top-four finish.
The next three weeks will give West Coast a better gauge of where they sit in the AFL's pecking order.
West Coast take on Greater Western Sydney at Spotless Stadium on Saturday before facing defending premiers Richmond in Perth.
An away clash with a rejuvenated Hawthorn rounds out the three-week stretch.
Eagles coach Adam Simpson praised the spirit his group have shown this season and said they weren't getting carried away with their hot start.
"Banking the wins early is really important this season," Simpson said.
"We have seen teams do it in the past. To get six wins is fantastic for us - our test is in front of us.
"Our players are level-headed, we're playing a consistent brand of footy.
"If we can keep doing that and play with that spirit, hopefully we can get some more of those wins."
West Coast's ruck pairing of Nic Naitanui and Scott Lycett has become the best in the competition.
The pair combined for 56 hitouts and 12 clearances against Port, giving West Coast's midfield a huge advantage.
The Eagles are one of only a few teams who are playing two genuine ruckmen.
Simpson said it was working because of how good Naitanui and Lycett were around the ground.
"Playing two rucks is almost impossible to do in this modern game. So they have to bring something else to the table," Simpson said.
"We all know what Nic brings, his follow up and his aggressive nature and his ability to bust packs.
"I think Scott is holding up his end of the bargain really well at the moment.
"Teams are going a bit different when they only play one ruck and a pseudo-forward ruck as a back-up. We're a bit different. But if they bring follow-up and pressure like they did today and in previous weeks, it will work for us."
West Coast midfielder Dom Sheed (foot) will be assessed in the coming days to see if he is any chance to face the Giants.