Quique Setien may only have been at Barcelona for just over a month, yet he will already know the importance of winning a Clasico.
The new Blaugrana coach takes his side to Real Madrid on Sunday, with his team having a two-point lead over Los Blancos at the top of the LaLiga table.
Barca are unbeaten against their great rivals in their previous seven games, while Madrid have not beaten them in the league since April 2016.
Here we look at how Barca's past five coaches have fared in their first LaLiga Clasicos.
PEP GUARDIOLA. BARCELONA 2-0 REAL MADRID. DECEMBER 13, 2008.
Both dugouts featured coaches taking charge of teams in a Clasico for the first time and it was Guardiola who got the better of Madrid's Juande Ramos.
Late goals from Samuel Eto'o and Lionel Messi earned Barcelona the victory as they moved 12 points clear of Madrid in the table too.
That victory occurred during a 10-game winning streak in LaLiga and it was no surprise that Barca, who beat Madrid 6-2 later in the season, went on to win the title.
TITO VILANOVA. BARCELONA 2-2 REAL MADRID. OCTOBER 7, 2012.
The two clubs had already met in the Supercopa de Espana at the start of the season, Madrid winning on away goals after both teams had won a leg apiece.
Their first league meeting of 2012-13 was all about Cristiano Ronaldo and Messi as both men scored twice in a 2-2 draw.
Ronaldo scored for a record sixth successive Clasico to put Madrid ahead and, after Messi had netted a brace, Los Blancos' Portuguese star took his tally to 160 goals in 155 games since his 2009 move from Manchester United with an equaliser.
GERARDO MARTINO. BARCELONA 2-1 REAL MADRID. OCTOBER 23, 2013.
All eyes were on new recruits Neymar and Gareth Bale and it was the former who scored first to set Barca on their way.
Alexis Sanchez would double that lead and though Jese Rodriguez pulled one back, Madrid fell to a defeat that left them six points behind Barcelona after just 10 league games.
Both teams would finish the campaign on 87 points, a total not good enough to win the league as Atletico Madrid claimed 90 to be crowned champions.
LUIS ENRIQUE. REAL MADRID 3-1 BARCELONA. OCTOBER 25, 2014.
The Blaugrana had claimed 22 points from the first 24 available but they suffered defeat at Santiago Bernabeu in October 2014.
Barca debutant Luis Suarez, back after a four-month ban for biting, set up Neymar for a fourth-minute opener but the home side stormed back.
An in-form Ronaldo levelled from the spot with his 21st goal of the season before Pepe and Karim Benzema scored in the second half. This remains Madrid's most recent home LaLiga win over Barcelona.
ERNESTO VALVERDE. REAL MADRID 0-3 BARCELONA. DECEMBER 23, 2017.
Los Blancos' awful start to the 2017-18 campaign continued as Barcelona moved 14 points clear of the defending champions with a comfortable win at the Bernabeu.
Suarez, Messi and Arturo Vidal all scored while Madrid, who had beaten Barca in both Supercopa de Espana legs at the beginning of the campaign, had Dani Carvajal dismissed for handball.
It was the first time Barcelona had won three successive league matches at the Bernabeu in Clasico history, and they come into Sunday's game with four straight victories at the ground.