Record Jacks fifty carries England to 202-7 in must-win Italy match
Most of England's batsmen got good starts against the lowest-ranked team in the tournament after Harry Brook won the toss and chose to bat.
But only Jacks, who reached his fifty off 21 balls, capitalised as Italy kept chipping away with regular wickets.
Jacks took the game by the scruff of the neck after England stuttered to 105-5 in the 13th over.
He put on 54 in 25 balls with Sam Curran (25) for the sixth wicket and 35 in 16 balls with Jamie Overton (15) for the seventh.
His fourth six, which took him to his fifty...