
In-form Laborde struck with a neat header in the 51st minute and a fine curling strike after chaotic Marseille defending 11 minutes later to make it six goals in seven appearances in all competitions, as the home side ran riot early in the second half.
Paul Lasne made sure of the result and put his side level on 25 points with Lille in the table with a neat side-footed finish with 20 minutes left.
Montpellier took their chance to snatch second spot from Lille after their rivals; 2-1 defeat at runaway leaders Paris Saint-Germain on Friday night.
“Yes it’s serious, it’s serious to play a second half like the one we played,” said Marseille coach Rudi Garcia.
“So it will change. I am very angry, I am as responsible as the players for this defeat, but my team is the one that played the first half, not the second. How to explain it? I’ve no idea.”
With Sunday’s defeat, Marseille slip back to sixth thanks to a last-gasp Romain Hamouma winner that gave Saint-Étienne a dramatic 4-3 win over Angers and allowed them to jump up to fifth.
In Sunday’s other match, Nantes hammered rock bottom Guingamp 5-0.