"When you're looking towards a World Cup - he's certainly re-invented himself in the T20 format but for one day format, I'm just interested in that one".
"Pujara was again superb. set the scene for Pant to show his skill".
Siddle, 34, played his last ODI against Sri Lanka in January 2010 and his inclusion will allow Australia to rest the pace trio of Mitchell Starc, Pat Cummins and Josh Hazlewood after a long test series against India.
However, the southpaw survived a big scare after he came down the track and smacked Ravindra Jadeja on the very first ball of the 15th over before Rahul put in a good effort at mid-on and dove to take a catch.
Now leading the series 2-1, India will hope to start their year on a positive note and silence their critics once and for all by putting up a dominant display on foreign soil.
Kohli announced his arrival at the crease with a four punched through extra-cover but fell straight after tea when a Hazlewood delivery down the leg-side caught his glove and flew to Tim Paine behind the stumps.
Play was suspended due to bad light in the final session just after the second new ball was due for India.
National selector Trevor Hohns said that after Australia lost to South Africa 2-1 at the start of the summer, a change was needed to turn things around.
Australia began the day with basically no hope of victory, but with a pitch conducive to batting and all 10 wickets intact, the hosts' maligned batsmen had a chance to find some form.
Jadeja though struggled to find his control and was even hit for three fours in one by Harris, who brought up his second Test half-century off only 67 balls.
Mitch Marsh was also dropped with Peter Handscomb back to counter India's two spinners - Kuldeep Yadav and Ravindra Jadeja.
Skipper Virat Kohli finally made a decision to declare the innings with 622 runs on the board with the loss of seven wickets.
At the interval, Pujara was 181 not out with Rishabh Pant unbeaten on 27, sharing a 60-run partnership at the Sydney Cricket Ground as India continued its tried and tested approach this series of building successive partnerships to grind Australia's bowling attack down.