"This test I honestly can't tell you [how I will be] until I go out there and sing that national anthem and walk out there," Warner said yesterday.
"At the moment, not just for me but for the guys that were here [when Hughes was hit] as well they are putting on a brave face.
"It is going to be emotional, I know for myself it will be, just walking out there today just brought back memories," he said. "It is always going to be in the back of my mind, every time I walk out there, every time I come here, that's just the way it is, any time I've got nothing on my mind, I will be thinking about it.
"I know when I go to face up at that Randwick end I'm going to be looking down at that spot.
"It's going to be tough but I've got to try and hold back the emotions and do what I do for the team and try and score runs."
Warner says he will continue to use Hughes' enthusiastic spirit as motivation and has declared himself a certain starter for the SCG test, despite continuing to battle thumb and arm injuries.
"I'm fine, I'm ready to go. The arm is sore but I just have to play through that pain like I did for the last game.
"It is not going to be in the back of my mind, that is for sure."
Warner's inclusion is a boost to the Australian side who have lost Mitchell Johnson with a hamstring injury for the test, while Shane Watson left training yesterday due to a stomach virus. Left-armer Mitchell Starc looms as the replacement.
Australia take an unassailable 2-0 lead into Sydney in the best-of-four series.
Cricket World Cup 1st XI
1: Windies reign supreme
The West Indies were the first true force in World Cup cricket. From their opening game of the inaugural 1975 tournament they won their first nine matches - one was abandoned - to dominate the first two cups.
It wasn't until the first match of the 1983 event that they were beaten, by India, who then did for them again for good measure in the final soon after.
This was just before the start of the West Indies' almost two-decade dominance of the game.
At those cups, they had brilliant batsmen - Viv Richards, Alvin Kallicharran, Roy Fredericks, Rohan Kanhai and Gordon Greenidge - world class bowlers like Andy Roberts, Joel Garner, Michael Holding and Colin Croft, and all inspired by captain Clive Lloyd.
Lloyd was a dominant figure, hugely respected by his players and no lightweight player.
A physically imposing man with a loping cat-like stride, - from which his nickname Supercat came - he led from the front, and it was he who worked out that, after being hammered in Australia in 1975-76 at least in part by brutal fast bowling, that was the way to go. The results are well documented.
And Lloyd played a critical role in the 1975 final, with his dazzling 102, which got the Windies out of a potential jam and pushed them from 50 for three to 291 for eight - remembering the first two tournaments were 60-over affairs.
Now throw in three runouts from Richards' golden arm among five in the Australian innings and a thrilling finish, with the crowd prematurely invading the pitch before the conclusion, and having to clear Lord's.
The champion quicks Dennis Lillee and Jeff Thomson scrapped to the end, adding 41 for the last wicket before the West Indies won perhaps cricket's finest ODI by 17 runs on a sunlit evening.
It was cricket's longest day and the perfect start to the global tournament.
Chalk the second final in 1979 up to Richards, Collis King and Joel Garner.
Once more the West Indies were wobbling at 99 for four before Richards and allrounder King put on 139 at pace.
Richards finished unbeaten on 138 off 157 balls; King enjoyed his finest day in Caribbean colours with 86 off 66 balls as they rattled up 286 for nine.
