Wales head coach Wayne Pivac admits his squad will have to dig deep ahead of the final autumn international game against Australia.

Adams suffered a calf injury in the warm-up before Sunday’s win against Fiji.

Francis withdrew earlier in the day and Rowlands and John departed with head injuries during the game.

John had taken over from Francis to earn his first start, but left after only seven minutes.

Francis, 29, was due to win his 60th cap, but was unavailable after suffering a concussion in training on Friday.

That meant Scarlets tight-head John won just his second cap having come off the bench for his debut in the 23-18 defeat by South Africa.

However, John departed after only seven minutes with injury to be replaced by Dillon Lewis, who had been promoted to the replacements’ bench after regular tight-head Francis’ withdrawal.

Wales also lost lock Rowlands to a head knock as the game wore on, prompting a debut for Exeter’s 19-year-old Christ Tshiunza.

Adams had been due to play in the unfamiliar outside centre role so Nick Tompkins’ introduction gave the Wales midfield greater experience in that role.

Tompkins’ place on the bench was filled by Willis Halaholo.

Adams, Francis, Rowlands and John joined a lengthy casualty list that includes Alun Wyn Jones, Ken Owens, George North, Leigh Halfpenny, Taulupe Faletau, Justin Tipuric, Josh Navidi, Ross Moriarty, Dan Lydiate and Aaron Wainwright.

However, Pivac expects Wainwright to be in contention to face the Wallabies in Cardiff.

“It could be we dig a bit deeper into the squad,” said Pivac.

“Josh [Adams] felt something in his leg in the warm-up. He wanted to start the game and see how it went, but we certainly weren’t going to allow that to happen.

“He was worried about letting his team-mates down. He’s such a good guy, he was putting the team before himself. The medical team and myself made that call shortly before kick-off.

“It was a late change in the changing room but these things can happen and you just have to adapt. Hopefully that won’t keep him out for too long. That was precautionary.

“We had a couple of head knocks, WillGriff John and Will Rowlands. With a six-day turnaround, we’ll have to see how they are tomorrow [Monday] but we’d have to say they are in doubt.

“Aaron Wainwright should be good for next week. As it happened on Friday, Tomas is already a couple of days into the protocols and has passed those so far so he’s currently on track.”