The owner of the business which manufacturers Dukes cricket balls had admitted that "there seems to be a problem" with the batch that have been used in the opening rounds of the County Championship season, which has contributed to high scores across the country.

There have been 20 totals of 500 or more in the first 48 matches of the 2022 season, compared to only 12 across the 125 Championship games played in 2021.

In addition, there have been 36.89 runs scored for every wicket lost in the Championship in 2022 - a 28% increase on 2021, and the highest figure on record since 1990.

"The batch of balls are a bit different: they seem to go soft pretty quickly, and then when they go soft, they swell a bit and go out of shape. They're just not a great batch, to be honest.

"It's something to do with Dukes. They've obviously got this batch wrong. I know the seamers want them to go back to last year's batch because I think the seams are actually smaller on them as well so you get a little bit less sideways movement. I guess that's why there's so many big scores this season."

Borthwick added that Marcus North, Durham's director of cricket, had been part of a group call with the ECB in which it was said that there had been more ball changes in the first six rounds of the 2022 season than in the whole of last year's Championship.

Dilip Jajodia, who owns British Cricket Balls Ltd, the makers of Dukes balls, told the Guardian: "There's been a quality issue, on the basis that balls are going out of shape. It's not a major issue. We've tightened up our process, we're sending balls out all the time, and hopefully the feedback will be better."

"We do everything exactly the same: the same procedures, the same raw materials. Then if there's a problem you have to react. Unfortunately we've had a batch where there seems to be a problem.

"If there's something inherently wrong with raw materials that started their journey nine months ago there's not a lot I can do about it, and I can't see it until they're in use. A handmade, natural product can't always be perfect. It amazes me how successful we are, actually."