Both talents have recovered from injuries, absences that have brought them closer together.
We've played a lot of PlayStation together, Andersson says.
Two razor-sharp counterattacks, with Andersson involved in both, were decisive.
At 1-0, Kristoffer Nordfeldt made a huge save from a shot by Jacob Bergström. The ball went to Axel Kouame, who, after a quick switch of play across the field, was able to set up Andersson for the opening goal.
The 2-0 also came after a counterattack. This time Andersson was behind the move and played Adrian Helm through for his first Allsvenskan goal.
Andersson had been on the field for seven minutes when he scored, and Helm needed eight minutes to score.
The talents, together with Swedish World Cup goalkeeper Kristoffer Nordfeldt, were the match-winners for AIK, despite Mjällby leading the match and creating plenty of pressure.
But it was not until stoppage time that Ali Youssef could pull one back.
Mjällby came into the game without national team player Elliot Stroud, who was ill with a fever. In the next match against Västerås on Friday, they will have to do without the trio of Jeppe Kjaer, Tom Pettersson and Abdullah Iqbal, who were all booked and are suspended.
