The youngest teams in the Premier League go head to head at Villa Park today.

Research by the Press Association news agency has found that Villa’s starting line-ups so far this season have an average age of 25 years, four months and six days.

But Albion are not far behind.

Villa captain Jack Grealish, who turned 25 in September, has led the way and has also starred for England in the current international break, while 24-year-old striker Ollie Watkins has top-scored with six goals.

Midfielder Douglas Luiz is the youngest first-team regular, aged 22, while Ezri Konsa and Matty Cash are both 23. Tyrone Mings, at just 27, is the oldest of the regular outfield starters in Dean Smith’s side, while goalkeeper Emiliano Martinez is 28.

Albion have an average age of 25 years, seven months and eight days - a reduction of more than a year compared to last year’s typical XI.

They also fielded the league’s youngest line-up this season in their 3-0 win over Newcastle, with an average age of just 24 years, five months and five days.

Their side features a wider spread of ages than Villa’s, with Pascal Gross, Maty Ryan, Lewis Dunk, Dan Burn and pre-season signings Adam Lallana and Joel Veltman all 28 or older, while Steven Alzate, Alexis Mac Allister, Tariq Lamptey and Aaron Connolly are all junior to Villa’s youngest regular Luiz.

READ MORE: Alzate's chance will come again

Head coach Graham Potter says he does not look at ages when selecting a team but he likes a lot of what the younger element bring.

He also sees a bit of naivety as an advantage at times.

Potter said: “Sometimes the level can beat you down and you can only do what you have experienced. Whereas a young player has no boundaries, there's no limit yet.

“They can just believe that they can do anything which is, of course, good but they can also be a challenge.

“Generally the aim is to have a nice mix. We don't pick a team based on an age.

“We pick a team based on who we think can help us the most. It's good for the future if there are some young ones in there.”

Manchester United are next on the list with teenager Mason Greenwood, 22-year-old Aaron Wan-Bissaka and Marcus Rashford, who recently turned 23, helping keep their average age just below 26.

Chelsea’s average XI is aged 26 years and 11 days, with homegrown youngsters such as Tammy Abraham, Mason Mount and Reece James keeping their places having been blooded amid last season’s transfer embargo, while key signings Kai Havertz and Timo Werner are 21 and 24 respectively.

West Brom are next, followed by Manchester City and Leeds, with Fulham, Sheffield United and Leicester also fielding an average age under 27.

READ MORE: Potter highlights key role played by Dunk

Arsenal are just a week over that mark, with small increases to Southampton, Everton, Liverpool, Wolves and Newcastle in turn.

Tottenham average 27 years, eight months and ten days, leaving three teams over 28 - headed up by Crystal Palace, whose average age of 29 years, two months and 13 days is nearly a year older than any other team.

Tyrick Mitchell, Eberechi Eze and Jairo Riedewald are the only first-team regulars under the age of 27 for Roy Hodgson - the Premier League’s oldest-ever manager at 73.

Their opening-day line-up in a 1-0 win over Southampton was the oldest in the league this season at 29 years, seven months and 28 days while even their youngest, in October’s 2-1 win at Fulham, averaged 28 years, seven months and 10 days - older than any other club in any match apart from Burnley in their October 3 defeat at Newcastle.

The Clarets are next oldest on average at 28 years, three months and 17 days, with almost three quarters of their playing time going to players aged between 27 and 31, while 35-year-old Phil Bardsley also drags up their average.

West Ham clock in at 28 years and 18 days, with 30-somethings Lukasz Fabianski, Angelo Ogbonna, Michail Antonio and Aaron Cresswell all first-team regulars even as veteran midfielder Mark Noble is phased out of the line-up.