Sadio Mane has made history as the first player to score in two different World Cup finals, and Al-Nassr have taken the accolade for him on his debut.
The Senegalese forward, who joined Al-Nassr from Bayern Munich last month, was named man of the match in Saudi Arabia's opening game against Qatar, scoring twice in a 2-1 win that took them through to the next round.
Mane's goals came in the second half, with one coming from the penalty spot after a handball by Al-Sadd goalkeeper Ali Al-Haidar. The other was a well-taken finish from distance.
It was a remarkable performance from Mane, who had previously scored in the 2018 World Cup final between France and Croatia, but this time he did it for his new club.
Al-Nassr were already through to the next round when they beat Qatar 2-1, but their victory over Al-Sadd ensured that they would be in the semi-finals instead of facing a potentially tough group stage opponent.
Mane's goal was just one part of a dominant display for Al-Nassr, who dominated possession and created numerous chances before Mane's strikes.
The victory will boost morale among fans of the club, who are hoping to make a big impact at the tournament.
Al-Nassr's victory also marks the start of a busy few weeks for Mane, who is set to play for Senegal in the African Nations Championship later this year, before returning to Al-Nassr to face Manchester United in the Champions League.
Overall, it was a memorable day for Sadio Mane, who became the first player to score in two World Cup finals, and Al-Nassr were delighted to see him shine in his debut appearance.