There is a freedom to the way Liverpool play that will make or break them.
After five minutes of Wednesday's Champions League showdown with Sevilla, it looked like it might very well be the latter.
Wissam Ben Yedder's opener at Anfield certainly owed more to a temporary defensive lapse than any underlying tactical failing, but it was no anomaly.
The frailties that exist in Jurgen Klopp's team when they do not have the ball are persistent and will be magnified in Europe's premier club competition.
That the Reds will face no side more taxing than Sevilla in a group also containing Spartak Moscow and Maribor should see to their progression to the last 16.
The LaLiga side – who beat the Merseysiders in the 2016 Europa League final – are no pushovers and they too will fancy their chances of progressing, but more accomplished opponents will not succumb so readily if gifted a fifth-minute lead, as Sevilla were.
What Liverpool produced in the first half in response to that self-inflicted setback was a performance illustrative of the wonderful flip side to their defensive fallibility.
Even with the creative brilliance of wantaway forward Philippe Coutinho resting on the bench until the final 15 minutes, the vibrancy and dynamism of an attacking unit comprising Sadio Mane, Roberto Firmino and Mohamed Salah is apt to unsettle any challengers.
In the immediate aftermath of Firmino's leveller, which arrived following precise build-up play from Alberto Moreno and Jordan Henderson, the Reds were rampaging forward again.
Had it been Firmino, Mane or Salah and not Emre Can on the end of a rapid counter, it would have been 2-1, but the German's finish was less assured than you would expect from one of their attacking triumvirate.
The fortune involved in the goal that put hosts ahead was evident, but not undeserved. Salah fouled Steven N'Zonzi to win the ball 20 yards out and the shot that followed took a sizeable deflection en route to beating Sergio Rico.
Though otherwise impressive, Firmino did not cover himself in glory when Mane was felled in the box, the Brazilian's spot-kick striking the upright to deny Liverpool a two-goal half-time cushion. And that proved costly.
Liverpool's heady mixture of attacking verve, profligacy and occasional rearguard alarm bells makes them a thrill to watch for any neutral, but it is hard to envisage the likes of Real Madrid failing to punish them more severely than their fellow Spanish side did here in escaping with a point.
If Coutinho should return in much the same form as he last demonstrated in club colours – and he had little chance to make an impact here – the threat Klopp's charges carry on the front foot will increase further and make them a match for anybody.
But the issues they have in preventing goals at the other end – a weakness exploited by Joaquin Correa to ensure the spoils were shared – could prove a fatal limitation to Liverpool's European aspirations this season.
|Djokovic struggles continue as Cilic, Dimitrov progress|
|Usain Bolt not ready for top level, says Stoger|
|Ronaldo is a goal – Santos hails Portugal star|
|Pro Bowl TE Bennett announces retirement from NFL|
|Broncos acquire Veldheer from Cardinals for sixth-round pick|
|Dustin Johnson smashes 489-yard drive at Match Play|
|Celtics star Irving to have procedure on knee|
|Giants lose Bumgarner, Samardzija to injuries days before season opener|
|Dybala and Icardi World Cup chances not over yet, says Sampaoli|
|Reed dumps Spieth out, Harman accounts for McIlroy|
|James: Colombia can´t get carried away with France win|
|Italy to wait on Verratti injury|
|Lopetegui happy with Spain showing against ´physically stronger´ Germany|
|Warriors rampant, Weir inspires Edinburgh|
|Messi has had hamstring injury for ´some time´|
|Forward-thinking Southgate makes case for England´s defence|
|McLeish to ring Scotland changes for Hungary clash|
|Rodrigo dedicates Spain goal to Canizares after death of son|
|France were taught a lesson in aggression by Colombia, says Deschamps|
|Late Simmonds penalty breaks Bath hearts|
|Ronaldo up to third on all-time list after Portugal brace|
|Cowboys boost receiving corps with Allen Hurns signing|
|Tigers cling on to win Elland Road thriller, Saints respond at Hull KR|
|Meunier expects PSG will sack Emery|
|Tony Romo finishes last in PGA Tour debut|
|Germany friendly emotionally important for Brazil - Tite|
|France 2 Colombia 3: Quintero completes stunning comeback in Paris|
|Portugal 2 Egypt 1: Late Ronaldo double stuns Salah-inspired Pharaohs|
|No Messi, no Magic – Sampaoli playing a risky game ignoring Dybala|
|Netherlands 0 England 1: Lingard strikes to ruin Koeman´s debut|
|Scotland 0 Costa Rica 1: McLeish suffers defeat in first game back|
|Argentina 2 Italy 0: Banega & Lanzini win it for Messi-less Albiceleste|
|Germany 1 Spain 1: Muller wonderstrike cancels out Rodrigo opener|
|Curry available to make Warriors return against Hawks|
|Paire ousts out-of-sorts Djokovic in Miami|
|Ibrahimovic: If I want to go to the World Cup, I´m there|
|Michael Bennett indicted for allegedly injuring paraplegic woman|
|Svitolina ends Osaka winning run in Miami|
|Australia not ready for World Cup – Van Marwijk|
|Turkey 1 Republic of Ireland 0: Topal strike downs O´Neill´s men|
|Norway 4 Australia 1: Kamara hat-trick spoils Van Marwijk´s Socceroos bow|
|Aguero to miss Argentina friendlies|
|Monaco rubbish reports Rybolovlev will sell club and buy AC Milan|
|Harman sends McIlroy packing in Austin|
|Messi misses Argentina-Italy game|
|Neuer cautious over comeback date despite taking positive steps|
|Lehmann slams ´disgraceful´ Newlands abuse|
|Di Maria predicts ´big change´ at PSG after Champions League failure|
|Everton defender Holgate warned for alleged homophobic tweets|
|Russia 0 Brazil 3: Coutinho on target in routine win|
|Icardi must keep performing to earn Argentina recall, says Zanetti|
|Different place, same Zlatan - Ibrahimovic determined to maintain winning DNA with LA Galaxy|
|Injured Cavendish out of Commonwealth Games|
|Experience the key for Juventus in title race, insists Trezeguet|
|Stanikzai plays through the pain to guide Afghanistan to glory|
|Lyon and Paine frustrate Proteas after Morkel joins 300 club|
|Messi lacks Maradona´s charisma, claims Batistuta|
|Usain Bolt claims he´ll return to Dortmund|
|Trezeguet confident Pogba will shine at the World Cup|
|Ibrahimovic departs Europe with remarkable haul of league titles|
|´Very, very happy´ Lanzini loves West Ham amid transfer talk|
|LA Galaxy confirm Ibrahimovic arrival|
|Pressure off soaring Falcons, says Flood|
|Afghanistan edge out Ireland to secure World Cup spot|
|Age no barrier to Messi brilliance - Kluivert|
|Japan 1 Mali 1: Late Nakajima strike earns a draw|
|Record-breaking Stockdale named Six Nations´ top player|
|Warner in verbal altercation with fan following dismissal|
|Uruguay 2 Czech Republic 0: Suarez scores 50th international goal|
|I choose the Galaxy! - Ibrahimovic confirms LA switch|