Ghana captain Andre Ayew hit a feeble left-footed effort from the spot in the 21st minute which was saved by goalkeeper Sergio Rochet, who had been adjudged after a lengthy VAR review to have brought down Mohammed Kudus.
FIFA WC PIX: Ghana vs Portugal
All five African teams at the last World Cup in Russia failed to get past the first round and the continent's football leaders have said their future priority is to make sides more competitive in the international arena.
Ghana had always been expected to struggle at this World Cup after an unconvincing qualifying campaign in which a Nigerian goalkeeping howler saw them win a fortunate place in Qatar.
A deflected strike by Pedro Obiang in the 72nd minute and a goal from Andre Ayew five minutes later, when he stabbed home a loose ball from close range after a corner, were enough to end Huddersfield's unbeaten start to the season.
The most impressive players at the FIFA World Cup 2022 after Round One.
FIFA's Technical Study Group (TSG) on Friday shortlisted three players for the Hyundai Best Young Player award, which is presented to the best young footballer in this year's World Cup.
Chelsea's terrible start to the season plumbed new depths on Saturday when the Premier League champions lost 2-1 at West Ham United.
Miroslav Klose scored a landmark goal as Germany and Ghana drew 2-2 with all the goals coming in a terrific second half of another rip-roaring football World Cup clash in Fortaleza, on Saturday.
Italian side Napoli has moved into second place in their Champions League Group F on Wednesday with a 3-2 win over French side Marseille at Sao Paolo.
Ghana and Algeria ratified their top ranking as both advanced to the quarters.
Manchester City needed a second-half penalty from striker Erling Haaland to break the resistance of a dogged Crystal Palace.
Arsenal missed their chance to go back to the top of the Premier League after being forced to play with 10 men for much of the game against London rivals Chelsea on Sunday.
Cesc Fabregas kept alive Chelsea's hopes of finishing in the top four with a quickfire goal in a 1-0 win at Swansea City which leaves the Welsh side facing a major fight to retain their Premier League status.
Swansea City came from behind to end Manchester United's unbeaten start to the Premier League season with an impressive 2-1 victory at the Liberty Stadium on Sunday.
The momentum that swept Leicester City away from relegation last season continued unabated at West Ham United on Saturday as their 2-1 win left them top of the Premier League.
Despite a splurge of summer spending of more than 500 million pounds and counting, it was a free transfer from France who provided one of the standout moments of the Premier League's big kickoff.
Leicester City must wait at least one more day for their first-ever Premier League title after drawing 1-1 with Manchester United at Old Trafford on Sunday.
Swansea City are becoming a force in the Premier League after maintaining their unbeaten start with am impressive come-from-behind 2-1 victory over Manchester United, manager Garry Monk said.
The United States got a dream start to their World Cup campaign when Clint Dempsey scored the fifth fastest goal in tournament history but they needed an 86th minute winner from John Brooks to secure a dramatic 2-1 win over Ghana on Monday.
Here's a glimpse of all that happened around the world of sport last week, in 10 images.
"After feeling strange in the second half of the Burton game in September, I underwent a series of tests," he said.
Harry Kane's 101st Premier League goal was the difference as Tottenham Hotspur earned a 1-0 win over Arsenal, to continue their fine recent form in north London derbies in front of a Premier League record crowd at Wembley on Saturday.
Bitter rivals Arsene Wenger and Jose Mourinho had wildly contrasting afternoons on Saturday as Arsenal went top of the Premier League and champions Chelsea lost again with their manager being sent off.
Rioting spectators forced a 34-minute stoppage in the African Nations Cup semis.
Headers by Romelu Lukaku and Nemanja Matic earned Manchester United an unconvincing 2-0 victory over Brighton and Hove Albion in a low-key FA Cup quarter-final played in freezing conditions on Saturday.
Manchester United maintained their push for a Champions League place after a Juan Mata goal on Saturday pushed Norwich City to the brink of relegation.
Anthony Martial introduced himself to Manchester United fans with a superb goal to complete a 3-1 win over bitter rivals Liverpool and cap a much-improved performance from Louis van Gaal's side on Saturday.
Tottenham Hotspur fluffed their last-day lines with a 5-1 defeat at relegated, 10-man Newcastle United that left them third in the Premier League behind bitter north London rivals Arsenal.
Here is a summary of stories from the English Premier League
This and more from the happenings in the world of football
In an exciting weekend for football lovers, Cristiano Ronaldo and Lionel Messi continued their extraordinary double act, both scoring hat-tricks as Real Madrid and Barcelona maintained their battle for supremacy at the top of La Liga. Chelsea's unbeaten start to the Premier League season ended with a dramatic 2-1 defeat at Newcastle United on Saturday but no-one can get the better of Bayern Munich, who marched on in the Bundesliga with a 1-0 win over Bayer Leverkusen. We present a summary of events in photos.
Chelsea found no chink in Everton's defensive armour as the Premier League champions were held to a frustrating 0-0 draw at Goodison Park on Saturday.
Manchester United stretched their unbeaten run to 11 games in all competitions after Daley Blind, in-form striker Zlatan Ibrahimovic and substitute Henrik Mkhitaryan gave them a 3-1 home win over Sunderland on Monday. Left back Blind fired United ahead with a crisp 39th-minute shot after Ibrahimovic teed him up perfectly. The towering Swede doubled the lead with a clinical 82nd-minute finish for his 17th goal of the season. Fit-again Mkhitaryan put the icing on the cake with a spectacular backheel effort after a sharp Ibrahimovic cross from the right, although television replays suggested the Armenian was marginally offside. Striker Fabio Borini gave Sunderland fans something to cheer with a dipping late volley.