FC Dallas claimed top spot in the MLS Western Conference after overcoming Los Angeles FC, while the Philadelphia Union had two players sent off in their loss to Atlanta United .
In-form Dallas moved ahead of Sporting Kansas City by a point in the west thanks to Saturday's 2-1 victory against 10-man LAFC – the club extending its unbeaten streak to six games.
Former Tottenham defender Reto Ziegler opened the scoring with his first MLS goal in the 25th minute – the Dallas left-back heading a stray ball past Tyler Miller at Toyota Stadium.
Roland Lamah doubled the lead six minutes into the second half courtesy of a well-taken finish inside the penalty area.