Liverpool have represented a specific brand of football for years under Jurgen Klopp.
Indeed, the German coach has installed offensive ways into his group of players since taking over in October 2015.
"We want to attack the opponent non-stop," he has explained, "when we have the ball, when we lose it and when the opposition have it."
Liverpool's approach to defending is central to their identity. The Reds are brave and willing to take risks by pressuring opponents in the final third, with Virgil van Dijk and his defensive partners often pushing up to hold a high defensive line.
Manchester United have been keen to establish a similar playing style since Sir Alex Ferguson retired from management, with Ralf Rangnick currently in charge of the club until the end of the campaign.
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The 63-year-old has a reputation for pressing and he's is trying to teach the players at Old Trafford to behave more like those at Anfield without possession, with David de Gea speaking to UEFA about the tactical changes recently.
"We try to play with a high line," he said. "If the pressing is not good enough, you can have problems at the back. But for the goalkeeper, you need to be off your line, looking out for any potential pass in behind to be able to help your defence."
Although the Spanish goalkeeper is correct, his words seem to conflict with his own behaviour between the sticks. In fact, De Gea appears more inclined than most of his peers to remain on his line rather than sweeping up behind his defenders like Alisson Becker.
The underlying numbers of the current campaign can be applied in order to capture the stylistic differences between De Gea and Alisson.
In terms of defensive actions outside of the penalty box per 90, De Gea places second from bottom against every other goalkeeper who has started at least 11 matches in the Premier League this season.
Only Alex McCarthy of Southampton places lower than De Gea but at the opposite end of the table, Nick Pope places top followed by Alisson in second and David Raya in third.
The story is largely similar when it comes to the average distance from goal - in yards - of all defensive actions. De Gea places 17th from a possible 22 goalkeepers, whereas Pope, Alisson and Ederson place first, second and third.
Despite his comments to UEFA, the United keeper seems to prefer remaining closer to his goal as opposed to charging out from his line and sweeping up through balls like Klopp's No 1.
The desire to collect crosses offers further evidence. De Gea has stopped only seven of the 212 crosses into the penalty area that opponents have attempted this season, which equates to just 3.3%. His percentage again places him second from bottom of England's top-flight, ahead of only Daniel Bachmann who is Watford's backup option for Ben Foster.
Brighton's Robert Sanchez places top having claimed 13.5 per cent of the crosses he's faced in his penalty box, followed by McCarthy, Pope and Alisson.
Although United seem to want to perform in a similar manner to Liverpool, their goalkeepers are worlds apart when it comes to their suitability to sweeping up far from goal.
When playing in an aggressive and attacking manner, few goalkeepers can compete with Alisson.
