For a time, it also looked like Root's fitness could be a concern.
The two side last faced each other in an worldwide ODI tournament was at the 2015 World Cup where Bangladesh ended their WC dream and continued their run of never having won a global one-day title.
All-rounder Ben Stokes returned from his impressive maiden IPL stint to help England take an unassailable 2-0 lead in a one-day worldwide series against South Africa but a knee issue led him to skip the final match, which the tourists won.
Bangladesh captain Mashrafe Mortaza was left to reflect on how Tamim and Musfiqur's exits off successive Plunkett balls in the 45th over probably cost his side a total in excess of 330.
Imrul's departure brought Mushfiqur and Tamim together, however, and the pair's stylish counter-attack may have had Bangladesh dreaming of stunning England again after their Test success a year ago and the left-hander's ninth ODI hundred deserved to have more of a say.
Tamim started on a cautious note getting his first boundary off 21st ball that he faced. It seemed like he rolled his ankle while batting and spent most of the second half of his innings hobbling around.
Rahim followed Iqbal to the dressing room immediately giving Liam Plunkett a shot at the first hat-trick of the tournament. He took 27 balls to get from 80 to 100, hitting just one boundary. Plunkett was a coat of varnish away from the hat trick but wasn't to be. Total: (for 6 wkts, in 50 overs) 305.
England's joy at launching their Champions Trophy campaign with a commanding win over Bangladesh was tempered by the prospect of all-rounder Chris Woakes missing the rest of the tournament.
Woakes had begun the tournament with a maiden, after England chose to give the tourists first use of a very good pitch on a glorious morning, but he was out of the equation all too quickly.
"It was quite smart, bowling a slow ball, and fearless. a big gamble".
The major disappointment for England was another failure for opener Jason Roy, who was caught at short fine leg for one to continue his poor run and intensify the calls for in-form Jonny Bairstow to replace him in the side. Caught at deep mid wicket for a well composed 95 of 86 balls. The soft signal by the umpires was not out which infuriated Iqbal. They played the ball to its merit and waited for the loose balls. If the decision soft signal was out, many think that decision would have stood.