Los Angeles Galaxy's winless run in MLS came to an end on Friday, while Jason Johnson scored on the final play to clinch a 2-2 draw for Chicago Fire.
The Galaxy had not won in five games and looked set for a sixth match without victory against Houston Dynamo until second-half stoppage time.
Alan Gordon's header looped into the net from the cross of fellow substitute Robbie Keane in the 92nd minute, as the reigning MLS champions triumphed 1-0.
LA captain Keane made his comeback from a groin injury, coming off the bench for the final 34 minutes to end a seven-game stint on the sidelines, and the veteran striker produced the decisive play for the hosts.
The drama did not end there, however, with Galaxy full-back Oscar Sorto sent off in the 96th minute for a tackle from behind on Dynamo's David Horst.
Houston were denied a penalty too, with the referee awarding a free-kick on the edge of the box, despite Sorto's tackle beginning inside the area.
In Ohio, a brace from Kei Kamara put Columbus Crew 2-0 up early in the second half but the visiting Fire surged back with Johnson heading in the equaliser in the fourth minute of stoppage time - his first goal for Chicago.
The Crew had won their past three home games heading into their clash with Chicago and looked on track for a fourth straight win at Columbus Crew Stadium after Kamara struck in the eighth and 55th minutes.
A sharp turn from Justin Meram was critical in the lead-up to Columbus' first goal, as the Iraq international picked out Ethan Finlay, who squared the ball for Kamara to finish.
Kamara completed his brace with a header nine minutes after half-time, following Kevan George's flick-on from Federico Higuain's corner.
But Chicago hit back in the 58th minute through David Accam and, after dominating the closing stages, the Fire claimed a point thanks to Johnson's long-range header from Eric Gehrig's cross.
It was a welcome change of events for the Fire, who conceded a stoppage-time equaliser at New York City last week.
