David Villa helped New York City end Chicago Fire's unbeaten run in MLS, while Dallas went top of the Western Conference.
Villa struck early in the second half as a 10-man City recorded a 2-1 win over the Fire on Saturday.
Yangel Herrera was sent off in the 12th minute at Yankee Stadium after a rash challenge on Fire star Bastian Schweinsteiger.
But Villa volleyed in the opener just after half-time before Frederic Brillant headed in the hosts' second.
M-V-P! M-V-P! M-V-P... watch this one from again and again and again... July 22, 2017
David Accam scored from 25 yards for Chicago, but they were unable to find another as their 11-match unbeaten league run was ended.
The win kept City in third but moved them to within a point of the Fire, who are two adrift of Toronto after the Eastern Conference leaders drew 1-1 with the Colorado Rapids.
In the Western Conference, Dallas are top after a come-from-behind 2-1 win over the Montreal Impact.
A Michael Salazar header had given Montreal a 23rd-minute lead, but Cristian Colman delivered after the break for Dallas.
Colman tapped in an equaliser and his superb control and finish secured the three points just after the hour-mark.
How sweet it is! Watch the best moments from that ended in a 2-1 FC Dallas victory. July 23, 2017
Dallas are a point clear of Sporting Kansas City, who played out a third straight draw with a 1-1 result at Real Salt Lake.
The third-placed Houston Dynamo made a strong start before claiming a 3-1 victory against struggling DC United.
LA Galaxy lost a thriller at New England as Teal Bunbury scored a brace to help the Revolution to a 4-3 win.
The New York Red Bulls were too good for Minnesota United 3-0 and the Columbus Crew edged Philadelphia Union 1-0.
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