Both Smith and Warner will be returning to high-intensity action at the showpiece event after serving one-year bans for their respective roles in the ball-tampering scandal in South Africa last year.
The world's most popular Twenty20 league ends on May 12, leaving most of the eight teams to rely on their benches as they race toward the play-offs.
While Kohli's 58-ball century anchored the Bangalore innings on Friday, England allrounder Moeen blitzed the Kolkata spinners, making 66 off 28 balls -- including six sixes and five fours.
Virat was the top-scorer with a 33-ball 41 as RCB could manage 149 for eight against Delhi Capitals after being asked to take first strike here.
That changed, however, after another World Cup group-stage exit at the 2015 edition in Australia and New Zealand was sealed with a woeful loss to Bangladesh.
Last man out was silver fox Rangana Herath, cricket's most successful left-arm spinner in history, in his last match before retirement.
England's varied attack, which features three seamers and three spinners, probed persistently through the morning as captain Root employed attacking field placements.
The islanders conceded a 139-run lead in response to England's 342 after being bowled out in the final session of play on day two on a turning Galle pitch notorious for its low scores.
The England all-rounder and practising Muslim made the claim in his autobiography, an extract of which was published in Britain's Times newspaper earlier this month.
Moeen Ali found himself making headlines on the field as well as off it after he led Worcestershire to the English T20 Blast title.
Moeen, 31, made the accusation in his soon-to-be-released autobiography, where he also labelled the 2015 Australian touring party as rude and disrespectful.
Moeen Ali said the apparent reference to Islamist militant Osama bin Laden came during his Ashes debut in Cardiff.
Australian cricket was thrown into turmoil when captain Steve Smith, vice-captain David Warner and batsman Cameron Bancroft were banned after a ball-tampering scandal during a test in South Africa.
Rishabh Pant scores maiden hundred as India sniff at improbable victory against England in final Test
The second session certainly belonged to Pant, who hit 14 boundaries and three sixes including one over deep mid-wicket off Adil Rashid to complete a well-deserved hundred.
England's top order has repeatedly failed to fire during the five-match Test series against India, failing to reach 400 once, and their batsmen again let them down on the first day of the Oval Test.