West Coast coach John Worsfold believed his side failed to capitalise on late chances in the final quarter of Saturday's enthralling five-point loss to arch-rivals Fremantle at Subiaco Oval, however he was nowhere near falling into panic mode just yet.

This was only the sixth Western Derby the Eagles have lost in 23 matches, and Worsfold - who was coaching his 100th game of AFL football - opted to take a philosophical approach when quizzed on the vital parts of the match.

"It was a pretty close game all the way, and one team was going to end up in front," he said.

"We're certainly disappointed that it wasn't us, we had our chances, but so did Fremantle, they grabbed theirs and went in front at the end. So, it's disappointing to lose any game of football."

He wouldn't elaborate on what his charges could've done better on the field.

"(Our performance today was) not bad, I think we were down a little bit in certain areas, but overall it was a good hard game by what I rate (as) two very good sides in the competition, and you know, that's what you like to see."

"We can play better. I've got no doubt about that."

Worsfold said having some ascendancy over Fremantle in the final term wouldn't have guaranteed a win due to the close nature of the affair.

"Regardless of if you've got the run or not, it only takes a clearance or whenever the ball (goes) forward for a shot at goal to change it when it's that close."

Eagles skipper Chris Judd had another blinder, finishing with 33 touches and a goal to kick-start the final term and put the Eagles up by four points, but Worsfold couldn't get carried away with the Ross Glendinning Medal winner's efforts.

"(His performance) must have been alright, the judges voted for him, (but), again, I don't have a good enough feel on how good he was, but he must have played well."

Ben Cousins missed his third straight match because of hamstring troubles and Worsfold would no doubt want to have his influential midfielder back in the side for next Saturday night's mouth-watering home clash with Collingwood.

"Three weeks (sitting on the sidelines) is about right for a good hamstrings strain…so we'd expect him to be right this week," he said.