Root, who made 143 in the first innings to move level with the previous England record of 33 hundreds held by the retired Alastair Cook, went to a century on Saturday's third day when he cut Lahiru Kumara for the 10th four off 111 balls faced.
Set just 158 to win, Ireland slumped to 33-5 at the close of Saturday's third day, with Zimbabwe left-arm quick Richard Ngarava doing the bulk of the damage in a sensational burst of 4-12 in four overs.
Pakistan’s mercurial all-rounder Shahid Afridi delivered the goods at the big stage, as his unbeaten fifty helped his side to glory over Sri Lanka in 2009. This was a follow-up to his 1/20 in the first innings. The all-round performance came in the final at Lord's, helping Pakistan clinch their maiden and only T20 World Cup title.