Where and when: Optus Stadium, Sunday, August 11, 3.20pm AWST

What it means for West Coast: The reigning premiers are in great form, having won six of their past seven games, but can't afford a slip-up if they want a top-two finish and an all-important home qualifying final. 

What it means for Adelaide: This is a season-defining game for the Crows. Last weekend's win over St Kilda covered some of the cracks, but they must take a big scalp to cling on to a finals berth.  

The stat: The Eagles have turned Optus Stadium into a fortress in a short space of time. They have an imposing 19-5 record at the venue and have won eight of their 10 games this year. 

The match-up: Jeremy McGovern v Taylor Walker
The All Australian defender, ranked 28th overall in the Official AFL Player Ratings, will attempt to zone off Crows co-captain Walker (119th overall) and take intercept marks at every chance possible. Walker's challenge is to make McGovern accountable.  

It’s a big week for: Luke Brown
The Crows' best small defender will have a huge job on his hands trying to contain the likes of Liam Ryan, Willie Rioli and Jack Petruccelle creating havoc at ground level. Brown will probably start on Ryan, but will need plenty of help from his fellow defenders. 

Big call: Andrew Gaff to have at least 35 disposals as the Eagles overrun the Crows.