For a long time, it looked like Örebro would get their second straight three-pointer.
But Mjällby managed to get a ball in the final minutes and thus scored a lead-heavy point in the bottom meeting.
However, it was Örebro that started strongest.
Nahir Besara - who last became a hero - struck again today.
In the eighth minute, Mjällby's defense cleared and the ball ended up at Besara's feet.
He thundered away a shot that meant 1-0 for the home team.
Twelve minutes later, Örebro was close to expanding.
Kevin Walker offered a delicious free kick against the far post, where Carl Hjertstrand reached the top - but Mjällby goalkeeper Carl-Johan Eriksson with a nice save.
In the sequence thereafter, it swung in the other direction.
A nice post found Joel Nilsson who was able to wide in the equalizer for Mjällby.
Equal situation at Behrn Arena.
Then nightmare minutes awaited the yellow-clad.
The guests' Adu first drew a warning in the 24th minute and four minutes later he clumsily went into a duel that gave him another yellow, thus he was sent off.
Nice start on others
Örebro would get a dream start in the second half as well.
The 1-0 shooter Besara got a miss after a tangled situation in the penalty area and Dennis Collander got one last foot on the ball.
2-1 to the home team.
With six minutes left of regular playing time, however, the white-clad got a real cold shower.
Mamudo Moro got off to a finish that meant 2-2 - a result that stood up to the final whistle.
The recorded point is Mjällby's first since May 22 and it is thus taken with his new coach, Anders Torstensson, at the helm.
Mjällby is still in the penultimate place with eleven points, at the same time Örebro is in the position above.
Örebro will face Varbergs Bois away next and for Mjällby's Djurgården is waiting.