Tilly Corteen-Coleman announced herself at the sharp end of international cricket on Sunday, taking two wickets on her England debut as England beat New Zealand by one wicket in the first one-day international at Chester-le-Street.

The 18-year-old did not just get through her first game. She ended it with 2-49, claimed her maiden international wicket when she dismissed Georgia Plimmer, and then removed Maddy Green for 88 in her final over. England still needed Charlie Dean and Corteen-Coleman to put together the last-wicket stand that sealed the result, with Dean standing in as captain for the day.

Dean said the moment felt emotional, and it was not hard to see why. Corteen-Coleman had walked into a match that was still in the balance, with England chasing control after New Zealand had kept pushing deep into the innings. A debut can disappear inside a tense finish. Instead, hers became part of the winning passage.

Her rise has been building for months. Corteen-Coleman had already spent the winter around England’s senior side on training camps, and that exposure helped earn her a place in the squad for this summer’s T20 World Cup. She also arrived with a growing reputation from last season’s Hundred, when Georgia Adams once let her be her dog sitter at Southern Brave, a small detail that now sits in sharp contrast to the pressure of international cricket.

England were also without Sophie Ecclestone, the world’s top spinner, because of a thigh niggle, which opened the door for Corteen-Coleman to be used in a more prominent role. She took it with composure. After the match, she said she was, for the majority, really happy with her performance, and the numbers backed that up.

The contest itself was tight enough to expose any error and late enough to punish it, which is why Corteen-Coleman’s final over mattered as much as her first wicket. New Zealand were still competitive, Green had made 88, and the margin at the end was only one wicket. England got over the line, but the larger takeaway is that a teenager trusted with a debut in a close chase delivered like someone further along the road.

For England, that is the encouraging part. Corteen-Coleman has gone from winter camps to World Cup selection to a debut that changed the shape of a match. The next test is whether Sunday was a one-off burst of promise or the start of a player who has already shown she can handle a finish that leaves no room to breathe.