Rusnak converted from penalty spot in the 10th minute of injury time to give Real Salt Lake its first lead.
Oscar Boniek Garcia gave Houston a 1-0 lead in the 36th minute when he scored his first MLS goal since Aug. 21, 2015. A free kick by the Dynamo bounced high off the wall and Garcia first-timed a volley that deflected off Real Salt Lake’s Nick Besler into the goal.
Rusnak faked a shot at the top of the penalty arc, took a couple steps to his left and ripped a left-footer off the far post and into the net to make it 1-1 in the third minute of stoppage time.