With four wins so far this season, a derby victory would deny West Coast a priority pick ahead of the first round in November's NAB AFL Draft. But Glass said such calculations didn't enter the players' minds, and they would be out to end a four-game losing streak to Fremantle on Saturday.
"It is an important game, there's no doubt about that – it's an important game for our club. There's no doubt we want to win the derby," Glass said from Subiaco Oval on Monday morning.
"We play to win every game. We're about constant improvement, and the best way to breed success is to win."
The draft system that has delivered Marc Murphy and Matthew Kreuzer to Carlton, Adam Cooney and Ryan Griffen to the Bulldogs and Jarryd Roughead to Hawthorn has some West Coast supporters questioning the value of winning a match for the rest of the season.
"I haven't heard supporters of West Coast say that, and I'd be very surprised if they do," Glass said.
"It doesn't bother me. I know the character of this football club (and) that's certainly not in the players' minds at all."
West Coast's 36-point loss to Port Adelaide on Sunday was its 19th consecutive defeat away from Subiaco Oval.
The club is now two games shy of the record set by the Sydney Swans in the early 1990s, with interstate games against the Western Bulldogs (Docklands) and Adelaide (AAMI Stadium) still to play this season.
Glass said the players were not concentrating on potentially setting an unwanted record.
"We want to improve our form home and away. So that's the real focus for us this week, making sure we play our best football.
"Then next road game, we attack it again looking for a win."
Glass said he would be very surprised if stars Dean Cox and Daniel Kerr played in Saturday's derby after the star duo consulted with Adelaide-based specialist Dr Steve Saunders over the weekend.
However, Kerr, who is suffering severe abdominal strains and Cox, who has serious soft-tissue damage in his groin, are both expected to return this season.
"It's about them getting back into training now and assessing how they go from there," Glass said.
While the star pair struggles with injury, second-year midfielder Chris Masten continues to emerge after an injury-plagued introduction to the AFL.
The No.3 draft pick was West Coast's best on the weekend with 38 disposals. The 20-year-old is averaging more than 28 possessions in his last five games, and Glass said he was one of the positives on a disappointing day for West Coast.
"Chris Masten played very well (and) he's starting to find a lot more of the footy," the captain said.
"There's no doubt he had OP (osteitis pubis) last year, so they've had to monitor him this year as well and make sure his workload isn't too much."
