No fifth day: Why New Zealand and Ireland are playing a four-day Test match - Explained

Ireland’s one-off Test against New Zealand in Belfast on Wednesday has left many fans confused because the Test match is being played over four days instead of the usual five. The game is officially recognised as a Test by the ICC, but it will not have a fifth day.New Zealand and Ireland met for the first time in Test cricket, with Ireland winning the toss and choosing to bowl first. The decision worked as the hosts reduced New Zealand to 100/4 at the time of writing.Since 2017, the ICC has allowed member boards to play four-day Tests if both teams agree. The idea was introduced mainly to help smaller cricket boards host Test matches without facing a major financial burden.In Ireland’s case, reducing the match by one day helps lower costs. At the same time, playing against a strong side like New Zealand gives the Irish team valuable experience in red-ball cricket. Ireland have also had limited first-class exposure in recent years, and matches against top teams are seen as important for their development.For New Zealand, the match is part of their preparation for the upcoming three-match Test series against England, which starts on June 4. The BlackCaps have fielded a strong squad for the Belfast game as they use it as preparation ahead of the England tour.There are a few key differences between a five-day Test and a four-day Test. In a regular five-day Test, teams are required to bowl at least 90 overs in a day. In a four-day Test, the minimum is increased to 98 overs per day to make up for the lost day.Another difference is the follow-on rule. In a five-day Test, a team needs a lead of 200 runs to enforce the follow-on. In a four-day Test, the required lead is reduced to 150 runs.The ongoing game between Ireland and New Zealand is only the fifth four-day Test in cricket history. The first such match took place in 2018 between South Africa and Zimbabwe in Port Elizabeth.The match will also not affect the World Test Championship standings. Ireland are not part of the current WTC cycle because they are outside the top-10 Test rankings. Since only New Zealand are part of the WTC cycle, the match will not be counted in the WTC table.New Zealand currently sit second in the WTC standings behind Australia, with two wins from three matches.