GREATER Western Sydney may be forced to make up to four changes for Saturday night's pivotal round 21 clash with Adelaide following a dirty day on the injury front on Sunday.

Veteran Brett Deledio spent most of the second half of the huge win over Carlton on the bench with ice applied to his left calf, Toby Greene has a hamstring problem, in-form ruckman Dawson Simpson faces at least a couple of weeks out after hurting his left ankle, while Sam Taylor also has a hamstring issue.

The Crows could be without key defender Daniel Talia when they head to Canberra, after the dual All Australian left the ground early in the fourth quarter of the Showdown with a corked right leg. Talia did not return.

Darcy Moore's injury woes continued on the weekend and the young defender is in serious doubt to play on Saturday night when Collingwood hosts Brisbane.

Moore hurt his 'good' hamstring against the Swans and took no part after half-time.

Darcy Moore clutched at his hamstring in this passage.



He will not return tonight.



Update thanks to @MLC_Australia pic.twitter.com/UkkCs18Fy1 — AFL (@AFL) August 4, 2018

Essendon will monitor Jake Stringer ahead of the Bombers' date with St Kilda on Friday night.

Stringer hurt his left ankle in the third quarter in a marking contest with Hawthorn’s Jarman Impey and came from the ground soon after – punching the bench in disgust. He battled on manfully but was clearly hampered.

Jake Stringer punched the bench after coming off the ground with a lower leg complaint.



Injury update thanks to MLC.#AFLHawksDons pic.twitter.com/Q7WG82n7Zm — AFL (@AFL) August 4, 2018

Geelong livewire Daniel Menzel is no certainty to face Hawthorn on Saturday. The forward revealed over the weekend that he stretched his groin and “lost power” in the loss to Richmond.

The Cats will also keep a close watch on defender Jed Bews, who hurt a shoulder late in the game.

Melbourne defender Joel Smith suffered a broken collarbone in the Demons' huge win against Gold Coast. Smith, who was in hospital on Sunday night, will miss several weeks.

Melbourne defender Joel Smith came off with the assistance of trainers after this tackle.#AFLDeesSuns pic.twitter.com/LuHEpxY7bm — AFL (@AFL) August 5, 2018

Fremantle first-year player Andrew Brayshaw appears unlikely to play again this year after he was struck in the face by Andrew Gaff during Sunday's fiery Derby. Brayshaw was taken to hospital with a fractured jaw and four displaced teeth.

Andrew Brayshaw left the ground bleeding from the mouth after an incident involving Andrew Gaff.#AFLEaglesFreo pic.twitter.com/ECZgNqiehg — AFL (@AFL) August 5, 2018

Fellow Docker Brandon Matera may also be sidelined after he hurt his right shoulder in a collision with Nathan Vardy.

West Coast defender Will Schofield injured his left hamstring in the Derby win and faces the prospect of missing the remainder of the home and away season.

Roarke Smith will be assessed ahead of the Bulldogs' test against North Melbourne after he was concussed (and didn't return) in the opening term of Saturday night's big win over St Kilda.

Young St Kilda forward Josh Battle suffered the same fate and will be monitored during the week.

Josh Battle has been ruled out with concussion after this clash with Dale Morris in the first quarter.



Update thanks to @MLC_Australia #AFLSaintsDogs pic.twitter.com/2VS3F58ucy — AFL (@AFL) August 4, 2018

Teammate Tom Hickey battled a lower leg complaint throughout the match and will also be assessed.

Gold Coast key forward Peter Wright’s season is all but over after he hurt his left knee in a marking contest against the Demons and ended up on crutches.

In other injury news:

Melbourne captain Nathan Jones finished Sunday's game with a large shiner under his left eye as a result of a collision with Gold Coast’s Alex Sexton

Adelaide's Riley Knight had his left knee assessed during the first quarter against Port Adelaide, but started the second

Matt Dea and Matt Guelfi were both late outs for the Bombers. Dea wasn't risked after suffering concussion in the round 19 win over Sydney, while Guelfi was ill

Hawthorn's Blake Hardwick hurt his right shoulder in the win over the Essendon but played out the match. Jaeger O'Meara copped a heavy Aaron Francis bump in the last quarter, but should be fine to face the Cats

Geelong ruckman Rhys Stanley (calf) was a late scratching, but Chris Scott reckons he'll be available for selection this week

West Coast's Jeremy McGovern came to the bench early after feeling unwell during the Derby, and appeared to have his pulse checked, but came back on and played out the game

Fremantle's Brady Grey came off with the blood rule following a heavy hit early in the second quarter, but wasn't off for long

Brisbane big man Oscar McInerney corked a quad in the third term of the loss to North Melbourne, but returned to play out the game