One of the biggest fixtures in the football calendar takes place this weekend as Real Madrid face Barcelona in the Clasico.
Two of of the most historically elite clubs, Barca and Madrid matches usually have massive implications not just in La Liga, but sometimes on the European stage also.
The stock of both of the teams, especially Barcelona, has dropped slightly in recent years with the likes of Lionel Messi and Cristiano Ronaldo moving on to pastures new.
But, the match still has massive global appeal with hundreds of millions of viewers set to tune in.
And it will be no different this weekend - despite the fact that Madrid are running away in La Liga. Indeed, Barcelona have been reborn in 2022 and look to be building a really special side.
On the biggest stage possible, which players have made an immediate impact on their debut? And can likely Clasico debutants Pierre-Emerick Aubameyang and Adama Traore shine on their bows on Sunday?
Alfredo Di Stefano - Barcelona 0-5 Real Madrid, October 1953
Alfredo Di Stefano is one of the best players in history and a true legend of Real Madrid.
However, sometimes the controversial manner of his transfer to Los Blancos is forgotten, as after a deal was made with Colombian side Millonarios, Di Stefano was actually part owned by both Barcelona and Real Madrid.
The Argentine superstar was to play for the Blaugrana first and then move on to Madrid, but after failing to impress in a handful of games for Barcelona, the club decided to sell their share of the player to Madrid.
It would prove to be a disastrous move, as on his Clasico debut a few months later, Di Stefano would fire Real Madrid to a 5-0 victory at Camp Nou, bagging a hat-trick in the process.
Johan Cruyff - Real Madrid 0-5 Barcelona, February 1974
Like Di Stefano, Cruyff was also at the centre of a tug-of-war of sorts between the two Clasico giants.
Indeed, the legendary Dutchman would ultimately turn down a move to the Spanish capital due to the club's affiliation with dictator Francisco Franco.
Cruyff would inspire Barcelona to their first La Liga title win in 14 years, and in that season he would make a memorable Clasico debut.
In the battlefield of Santiago Bernabeu, Cruyff helped humble Madrid on their own patch, running the game from the get-go - while also surviving more than a few tasty tackles from the opposite.
He would grab a deserved goal as Barca won 5-0.
David Villa - Barcelona 5-0 Real Madrid, November 2010
In one of the most memorable Clasico matches since the turn of the century, Pep Guardiola's Barcelona were at the peak of their powers in November of 2010 when they demolished Real Madrid 5-0 at Camp Nou.
After the failed Zlatan Ibrahimovic experiment, David Villa was brought in from Valencia and his Clasico debut the Spaniard would score two of the five goals.
Villa was the beneficiary of two fabulous passes from Lionel Messi to score his goals, but the finishes were still fantastic.
The first was lashed into the bottom left corner, while the second was intelligently stabbed under the oncoming Iker Casillas.
Neymar - Barcelona 2-1 Real Madrid, October 2013
There is certainly a theme running through our list and that is of players who were linked with both Barcelona and Real Madrid before eventually moving to Spain.
Barca would ultimately beat Madrid to the acquisition of Neymar in May of 2013, and although the legality of that deal would come into question later on, the Brazilian was still fabulous on the field.
It may have taken Neymar a little while to find his feet in La Liga, but on the grandest stage against Madrid he stepped up to help his new club to a win in the fixture on his debut.
Barca defeated Madrid 2-1, with the superstar winger recorded a goal and an assist for the winner, scored by Alexis Sanchez.
Zinedine Zidane (as coach) - Barcelona 1-2 Real Madrid, April 2016
Moving away from players on the pitch, there are coaches out there who have had memorable debuts in the Clasico from the dugout.
At the time when Zinedine Zidane took over at Madrid, Rafa Benitez had just been sacked, with fans not happy with the Spaniard's alleged pragmatic playing style as well as the lack of inspiring results.
Zidane took charge of his first Clasico in April of 2016 and inspired Madrid to a 2-1 victory at Camp Nou despite being down to 10 men.
Prior to that game, Barca were on a 36-match unbeaten run so the Ballon d'Or winner certainly made a statement at that time that he was a proper coach as well as an iconic player.