Kerr, who now holds the record for the highest ever individual score in women's ODI cricket, broke a 21-year-old record which was earlier held by the Australian Belinda Clark.
The Wellington-born player hit 31 fours and two sixes in her 145-ball innings to top the 229 not out Australia's Belinda Clark amassed against Denmark in Mumbai in 1997 - nearly three years before Kerr was born.
Kerr, whose highest ODI score before this series had been 30, signed for Kia Super League side Southern Vipers in May. She has also taken 31 ODI wickets.
Amelia Kerr smashes the highest score in women's ODI cricket.
New Zealand's Amelia Kerr created history on Wednesday when broke a record that was set even before she was born, scoring a double hundred against Ireland at Dublin.
If her record-breaking innings was not enough, Kerr then took 5-17 (seven overs) with her leg-breaks as the White Ferns bowled out the Irish for 135.
Kerr's previous best with the bat had been 81 not out in the first ODI against Ireland on June 8, while her best bowling figures were 4-42 against Pakistan in November, 2016. Amy Satterthwaite (61 off 45 balls) and Kerr provided the team with a flawless start, scoring 113 for the first wicket. Una Raymond-Hoey led the way for the hosts, with 42 runs from 68 balls before being dismissed by Kerr, who also claimed four of the last five wickets.
In the second ODI, they had posted 418.
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