INJURED Adelaide defender Brodie Smith ran at training on Wednesday, but teammate David Mackay says it's still too early to know whether he'll play against Melbourne on Saturday.

Smith was knocked out in the club's win over Collingwood last weekend when he was slung into an opponent's knee.

The 23-year-old was carried from the field but was able to sing Adelaide's team song after the win.

He flew back with his teammates without issue and was immediately back at West Lakes recovering from the win early this week.

Smith will be given as much time as possible to prove his fitness before the Crows rule him in or out of their Saturday afternoon side.

"Brodie's progressing well, but it's a day-by-day thing with these concussions and we’ll have to wait until later in the week when he has to do the test and train a little bit more," Mackay said.

"At this stage we don't really know [whether he'll play]."

Adelaide has kicked off the season 2015 in stunning fashion, winning convincingly in both of its opening matches.

Players have attributed the club's form to the trust between players born from an arduous pre-season under new coach Phil Walsh.

Walsh used knowledge gleaned from Port Adelaide's high performance manager Darren Burgess that players were able to push harder than most thought possible over the summer.

The Crows created a pre-season program of testing proportions both physically and mentally.

Mackay said the tough summer had helped create a strong bond at the club.

"It started many months ago when we started pre-season, got a lot of hard training under your belt, and I suppose that's where you build up the foundations for what happens during the year," he said.

"Our pre-season was about challenging ourselves physically and mentally so when we get in situations that are difficult during the season we can come through it.

"We've done a lot of work in that area, tried to build some trust over the summer."