articleGiorgos Giakoumakis became just the second player in MLS history to score in each of his first five starts and Atlanta United used an own goal in the ninth minute of stoppage time to beat the Chicago Fire 2-1 Sunday. Atlanta's Juan José Purata redirected a corner kick off Chicago midfielder Maren Haile-Selassie and into the net for an own goal in stoppage time to seal the win. Kacper Przybylko subbed on in the 81st minute for Chicago and scored in the 90th to make it 1-1. Diop replaced starter Quentin Westberg to begin the second half and finished with two saves in his first appearance of the season. Atlanta (4-1-3) is unbeaten in four games since suffering its only loss of the season, a 6-1 road drubbing by the Columbus Crew.