Cristiano Ronaldo leads Zlatan Ibrahimovic 1-0 in their two-man race to reach Brazil 2014, or at least that's how many believed the aggregate score should be viewed after their first game in Libson.
However, with Ibrahimovic looking rather subdued in that encounter, and Sweden going to great efforts to force Ronaldo to be clinical rather than spectacular, neutrals will be hoping their individual talent blossoms under the pressure of the deciding second leg.
The game kicks off at 9 p.m. local time (8 p.m. GMT for UK viewers) at the Friends Arena located in Solna, northern Stockholm.
With the loss for a true football icon the price of victory for either team, attentions will be drawn to events in Sweden on Tuesday, November 19.
Below are the key match details, including a brief preview of the potential match-winners, result prediction and information on how to stream or watch the game live online or on TV.
Sweden vs. Portugal
0-1 on aggregate after first leg
Venue: Friends Arena, Solna, Stockholm
Date: Tuesday November 19
Time: 9 p.m. local, 8 p.m. GMT (3 p.m. ET)
Where to Watch the Game on TV
Sky Sports 1 will be showing the showdown in full and glorious HD, with build up from 7:30 p.m. (GMT).
Live Stream Information
SkyGo users can stream and watch the action online from 7:30 p.m. (GMT). An active subscription is required. Click here for more details.
Players to Watch
The match-winner in Lisbon could single-handedly make sure of Portugal's qualification should he grab an away goal in Stockholm.
Rather than adding glamour to the first leg, Ronaldo ground out the strike that his team needed, and the Real Madrid forward will make no allowances for that.
He may not endear himself to any of his critics by being so direct and forceful, but even if he doesn't truly shine in the decider he can still fire Portugal into the World Cup.
While Ronaldo may have scored the winner in Lisbon, Moutinho was the man of the match in the way that he controlled the midfield and guarded Portugal's back line.
He almost got lucky, too, with a shot after rounding Andreas Isaksson in Sweden's goal, but could only hit the side netting.
He will be key again in Stockholm as the hosts attempt to overturn the aggregate deficit with an attacking performance at home.
Sweden's main man was all too quiet in the first leg, with a number of important defensive headers in his own team's box being his greatest contributions to the tie so far.
The striker's ability to find his teammates was also promising, but he was largely nullified when it came to threatening Rui Patricio's penalty area.
With Sweden coach Erik Hamren set to force the issue in order to get his team back into contention, Ibrahimovic's awareness of those around him could be enough even if he isn't able to attack directly.
The Paris Saint-Germain striker's strength, agility, aerial power and technique make him one of the most well-equipped target men around, and if his teammates can find a way to use him as a platform to build off in Stockholm, they could yet turn the tie.
The man who muted rather than silenced Ronaldo will need to put in another incredible defensive performance to fully muzzle the first-leg match-winner if his team have any hope of reaching Brazil.
While the likes of Ola Toivonen and Sebastian Larsson will be called upon to support Ibrahimovic on the attacking front, with Portugal's exceptional pace and pizzazz out wide, Sweden must be wary of counter-attacks.
Lustig will play a pivotal part in ensuring those opportunities are snuffed out before they can shatter the home team's dreams of Brazil 2014.
Sweden 1-1 Portugal (Portugal to win 2-1 on aggregate)