GWS midfielder Stephen Coniglio has ruled himself out of the 2019 AFL Grand Final, after taking part in training on Wednesday.

Coniglio trained with teammates during their main session of the week, but told the club he couldn't be confident in playing all 120 minutes on Saturday.

“This is a selfless decision by Stephen and typical of the man he is," General Manager of Football Wayne Campbell told gwsgiants.com.au.

“He left it all on the training track today and ultimately he decided he doesn’t think he is capable of playing out the whole game and therefore didn’t want to let his team mates down.

“His decision has the full support of everyone and we know he’ll continue to support the team to the best of his ability as he has over the past 10 weeks.”