Houston and Toronto ground out a 0-0 draw in Texas on Saturday night, extending the Dynamo's winless run to six.
Toronto came into the match off a victory over D.C. United, snapping an 11-game winless run.
The Dynamo, meanwhile, have a six-game winless streak going following the draw with TFC.
Houston, at home, held 68 percent of possession. It had a tame penalty appeal turned down in the 87th minute.
Toronto remains second-from-bottom in the Eastern Conference. Houston is tied for third in the East.