Chaos and confusion reigned on Wednesday as Morocco beat Argentina 2-1 in their opening game of the men's Olympic football tournament, but only after a late equaliser for the South American side was disallowed and the final minutes were played out in an empty stadium following crowd trouble.
Argentina thought they had escaped from the Group B match in Saint-Etienne with a 2-2 draw when Cristian Medina scored in the 16th minute of added time.
But as their players celebrated, projectiles including bottles and plastic cups rained down from the stands and several spectators entered the pitch, with the referee promptly blowing the whistle, AFP reported.
The teams left the playing area, but the referee had not blown for full-time and the outcome of the match was completely unclear until the sides finally reappeared two hours later to play out three more minutes in a stadium by now emptied of spectators.
Medina's goal was eventually disallowed for offside following a VAR review, and Morocco held on for all three points.
It was an undignified start to the sporting action at the Paris Games, and a bad day all round for Argentina, whose players were booed as they emerged onto the pitch and during the national anthem by the crowd, most of whom were supporting Morocco.
That welcome came after Argentina players were filmed singing racist chants following their victory in the recent Copa America.
"It is a circus," complained Argentina coach Javier Mascherano.
"At no point did they tell us our goal was not valid... this would not even happen in a neighbourhood tournament. It's pathetic.
"Beyond the Olympic spirit, the organisation needs to be up to standard. At the moment it is not, unfortunately."
Argentina are looking to win men's football gold for the third time after success in 2004 and 2008, but Mascherano's side trailed 2-0 following a brace by Soufiane Rahimi.
Morocco captain Achraf Hakimi, the Paris Saint-Germain full-back, set up Rahimi for the opener in first-half stoppage time.
The reigning African Under-23 champions doubled their lead six minutes into the second half from the penalty spot, Rahimi converting after Ilias Akhomach was brought down.
Mascherano, who starred in the teams that won gold in Athens and Beijing, had at one point hoped to persuade Lionel Messi to feature among the three permitted overage players in his squad otherwise limited to those under 23.
Messi turned him down, and the biggest names in their side here were Manchester City striker Julian Alvarez and captain Nicolas Otamendi, the Benfica defender.
Giuliano Simeone, son of former Argentina star Diego, came off the bench to pull one back midway through the second half.
Medina then thought he had saved a point in the 106th minute as he nodded in after Otamendi and Bruno Amione both hit the woodwork in a frantic few seconds of action, only for Argentina to be denied.
Argentina's next game will be in Lyon on Saturday against Iraq, who came from behind to beat Ukraine 2-1 in their opener.
France have high hopes of winning gold on home soil despite coach Thierry Henry's unsuccessful attempts to recruit Kylian Mbappe into his squad.
They beat the United States 3-0 before a large crowd in Marseille, with captain Alexandre Lacazette opening the scoring on 61 minutes via a fine strike from range.
Lacazette then set up new Bayern Munich signing Michael Olise to curl in the second, and defender Loic Bade headed in a late third.
In the same Group A, New Zealand defeated Guinea 2-1 with Plymouth Argyle's Ben Waine getting the winner.
Silver medallists in Tokyo in 2021, Spain opened their bid for gold with a 2-1 win over Uzbekistan in Group C in Paris.
Marc Pubill gave Spain the lead just before the half-hour mark but Uzbekistan equalised from the penalty spot in first-half added time, Eldor Shomurodov converting after a foul by Barcelona prodigy Pau Cubarsi.
Sergio Gomez had a penalty saved early in the second half, but the former Manchester City player netted Spain's winner just after the hour mark.
Group rivals Egypt and the Dominican Republic drew 0-0.
Japan beat 10-man Paraguay 5-0 in Group D, while Israel and Mali drew 1-1 in a match which passed off without major incident despite initial security fears.
