Gray, who injured his anterior cruciate ligament last April, played as a āguestā for Port Adelaideās seconds with his aligned side West Adelaide not playing a trial match this weekend.
He appeared to move well and was involved in several packs and contests en route to kicking three goals.
Development manager Daniel Healy was at the game and described Grayās over 20-possession performance as a āstep upā.
But he admits there is still a long way to go for Gray before he is considered for AFL selection.
āHeās still got a lot of work to do as far as his running out of stoppage and his intensity around the contest,ā said Healy.
āIt was a real step up for him and he looked really sure of himself and really uninhibited in the contest.ā
Despite the lower-grade of football he played at, Healy said it was still exciting to see Gray get involved in contests.
āIt was a lower level and he probably had more time on ball this week but he got much more involved,ā said Healy.
āHe (Gray) is really pleased with the way everything's come along and we are as well.
āWeāre not putting any limits or timeframe on it (his return), for him itās about continually improving his running capability, heās making positive steps.ā