A thrilling 3-3 draw with Hungary at UEFA Euro 2016 last summer put Portugal into the knockout rounds and on their way to a first-ever triumph at a major tournament.
On that day back in June, Cristiano Ronaldo netted twice, and Portugal will hope their talisman is on form once again when they face Hungary in Saturday's qualifying clash for the 2018 FIFA World Cup.
A victory for Fernando Santos' side in Lisbon would see them, at worst, remain second in UEFA Group B, but a defeat would see Hungary leapfrog Portugal in the standings.
Read on for a preview of a crucial clash for both sides on the road to Russia 2018, along with scheduling and viewing information.
Date: Saturday, March 25
Time: 7:45 p.m. GMT, 3:45 p.m. ET
TV Info: ITV4 (UK)
Live Stream: ITV Hub
Hungary will be motivated to claim at least a point against Portugal as, if they lose, their chances of gaining even a play-off spot will be hit hard.
The gap between Bernd Storck's side and Portugal is at only two points, and Hungary cannot afford for it to extend to five as they look to stay in the hunt for qualification.
|Group B Standings|
Equally, Portugal will be desperate to avoid dropping further back from Switzerland in the automatic qualification top spot in the group.
The Swiss outfit are unlikely to drop points when they face Latvia at home on Saturday, so Portugal must aim to pick up a win against Hungary.
While the two teams played out a draw at Euro 2016, Portugal have the edge over their opponents on Saturday in terms of personnel.
Ronaldo will, of course, be key to Portugal claiming all three points, but the likes of goalkeeper Rui Patricio, midfielders Renato Sanches, Andre Gomes and William Carvalho and experienced winger Nani will all need to be on good form.
Especially given they are at home, a firing Portugal side should be able to claim a victory against Hungary and keep pace with, if not catch, the Swiss in the group standings.
Since losing 2-0 to Switzerland in their opening qualifier for the 2018 World Cup, Portugal have won three on the bounce, beating Andorra, Latvia and the Faroe Islands by a combined score of 16-1.
Hungary will pose a bigger threat than those three sides and will have the experience of having gained a point against the Portuguese last summer.
But Santos' men, with all their attacking quality, should have enough to claim a crucial victory.