The one thing Barnsley and Portsmouth have in common is their players suit a 4-2-3-1 formation which both can use to great effect in League One.
Portsmouth are flying high at the top, relying on that impressive bank of three behind the central striker to provide goals. Barnsley tend to go with a 4-4-2, but can easily move between set ups to accommodate their opponents, as they showed when using the 4-2-3-1 to hammer Peterborough 4-0.
Both operate a flat back four and boast some fine defenders in their ranks, but how they approach the attacking third does tend to vary. With such shared riches between them, it would be hard to pick a combined eleven from both sides.
Hard, but not impossible.
FLW looks at the best combined Portsmouth and Barnsley starting XI. Do you agree with our picks?
There's two very solid keepers behind both defences and it is hard to split them.
Both sides have conceded 14 goals, making it statistically hard to do so as well.
We're plumping for MacGillivray purely based on his command of his area.
Thompson gets the nod over Dimitri Cavare due to his extensive Football league experience.
The 27-year old served Swindon well over nine years and is doing the same at Fratton Park. There's little to choose between the two in terms of ability.
On the left side of defence we like Barnsley's Daniel Pinillos.
The Spaniard is no stranger to the English game having been at Forest, but he looks settled in the Barnsley back four this season.
There's a tough call to make at centre half but one who is a shoo-in has to be Matt Clarke.
He's garnering a reputation as one of the finest players outside the top two divisions and he'll surely grace the Premier League one day.
Both Barnsley centre backs deserve a mention, Ethan Pinnock has been solid so far this campaign, but we're going with Liam Lindsay as our pick.
He's been attracting scouts at Oakwell and would pair well with Clarke in a combined XI.
Alex Mowatt can operate in a deep midfield role, or advanced and can bring goals and assists to a side.
He'd be our shout to play one of the two holding roles if we chose to set up in a 4-2-3-1, but he could also pair with our next pick in a 4-4-2 if needed.
Naylor is an experienced head and would bring the clam steel to the central of our combined midfield.
He's in a 4-2-3-1 here, but with some readjustment of the attacking players we could go to a conventional 4-4-2, or the more trendy 4-4-1-1.
In the middle of our bank of three advanced midfielders is Ronan Curtis, a man flexible enough to change this formation into anything we want it to be.
He's been an incredible signing for Portsmouth and will be on the shopping list of a few Championship clubs this winter.
On one flank it has to be Brad Potts, either as a winger or tucked into the bank of three.
Potts has stood out for Barnsley this season and is another who will either take his side to the Championship, or will move there without them in the summer.
Jamal Lowe is a flexible attacker whom we'd like to see as an orthodox winger, but his inclusion was a no brainer.
He gets ahead of the strikers, provides width when needed and could play centrally if required.
His emergence from the non league scene could be a big story if his development continues.
It was a tough call up front, Ollie Hawkins and Brett Pitman are both great at holding the ball up. Instead, we've gone for Kieffer Moore.
He's quality at League One level, strong and mobile and crucially, a first choice for his side. Choosing between one of the three was hard, but the seven goal forward takes our final place.