The road point was salvaged by Tiimbers’ striker Jeremy Ebobisse, who rose highest in the 91st minute to nod home his first goal of the year.
Portland’s comeback started in the 50th minute through Dairon Asprilla, as the Colombian forward made it 2-1 on a counter-attack that was rooted in Houston’s corner kick.
Before the Timbers struck twice in the second half, Houston accomplished that in the first frame, starting in the 15th minute when Fafa Picault dunked on the goalmouth for a 1-0 lead.
Tyler Pasher doubled Houston’s strong start in the 33rd minute, collecting Matias Vera’s line-breaking pass before beating Ivacic with a curling effort.
Both teams hit the crossbar during the first half, beginning with Dynamo center back Maynor Figueroa heading a Vera cross off the woodwork in the 28th minute.