Emerging key forward Paddy McCartin won’t play this weekend while he recovers from a head knock in Sandringham’s loss to Coburg last weekend.

The 21-year-old continued his frustrating run of bad luck on Saturday, receiving a knee to the head while chasing a ground ball in the opening quarter.

After sustaining three concussions in an injury-riddled 2016, Saturday’s head knock was McCartin’s first since Round 15 last season.

“Paddy unfortunately copped a head knock in the first quarter and was ruled out of the game,” Saints GM Football Performance Jamie Cox told saints.com.au on Wednesday.

“Paddy has subsequently been taken out of this week – he hasn’t quite recovered in time.

“We’re hopeful that he will be available for next week. He will be tested early next week to try and progress him towards that.”

Midfielder-forward Darren Minchington also sustained an ankle injury in the Zebras’ loss and is set to miss at least the next few weeks with the setback.

“Darren Minchington injured an ankle. He strapped it up and played the rest of the game, albeit quite inconvenienced,” Cox said.

“It’s a bit indefinite how long he will miss at the moment, we’re just really assessing his injury, but it might be a few weeks for Darren unfortunately.”

Cox said star midfielder David Armitage is edging closer to a return from the groin injuries that have limited the 29-year-old to just two games this season and none since Round 4.

“Dave has started running and is training well,” he said.

“He’s probably still four weeks away from returning to footy but it’s encouraging to see him running laps of the oval here at Seaford.”

Cox confirmed that rookie key defender Nick Coughlan is set to miss three to four weeks after he strained his hamstring in the VFL.

“Nick Coughlan also strained a hamstring during the fourth quarter of that game,” he said.

“It looks like a pretty traditional hamstring, he’ll miss three or four weeks before he’s right to resume as well.”

Injury List 29/6/17

Paddy McCartin (concussion) 1-2 weeks
Darren Minchington (ankle) indefinite
David Armitage (groin) 4 weeks
Nick Coughlan (hamstring) 3-4 weeks
Ed Phillips (foot) available
Nathan Wright (shoulder) test
Hugh Goddard (foot) season