Minnesota United hadn't won an MLS home game all season and Houston hadn't won a game on the road when the two teams met at Allianz Field on Wednesday night.
The Dynamo still haven't, not after their 1-0 loss there.
"Well, it has been a long time coming," Loons coach Adrian Heath said.
Loons forward Bongokuhle Hlongwane's goal in the 14th minute stood as the winner on a night when his team had at least four other prime scoring chances — and a second insurance goal with any one of them — snatched away by Houston goalkeeper Steve Clark.
The Dynamo now are 0-4-1 on the road this season while the Loons are 1-1-3 at home. The Loons' only home victory this season was last week's U.S. Open Cup victory over Philadelphia Union in penalty kicks. The win also ended the Loons' winless streak, which had been at 0-5-1.
The two teams meet again in only six days, in a U.S. Open Cup quarterfinal game Tuesday in Houston.
This time, the Loons held fast to that 1-0 lead and didn't surrender heart-breaking late goals like they had to Vancouver, Orlando City and Philadelphia Union earlier this season.
This time, they surrendered nothing but unsuccessful set pieces – corner kicks and free kicks both – and went home winners after defender Kemar Lawrence in particular saved the night well away from goalline by blocking Houston second-half sub Thor Ulfarsson's shot at an open goal.