The Columbus Crew and Montreal Impact clinched their spots in the MLS play-offs on Saturday.
The Montreal Impact secured their place in the MLS play-offs after a 1-0 win over the New England Revolution.
Ignacio Piatti's 55th-minute goal saw the Impact to their narrow victory at the Gillette Stadium.
With the victory, Montreal climbed into fourth in the Eastern Conference and are guaranteed a top-six finish.
The Revolution sit sixth, three points clear of Orlando City.
Piatti's goal was a worthy match-winner early in the second half.
The Argentine midfielder beat three markers before poking a 30-yard effort into the top corner.
Also securing a place in the play-offs were the Columbus Crew, who overcame Toronto 2-0.
Ethan Finlay scored the opener with a close-range strike after a corner in the 40th minute, but the Crew had to wait until late on to seal their win.
Federico Higuain struck in the first minute of additional time with a smart lobbed finish to complete the win.
In the day's other game, Dallas clinched the Western Conference title with a 1-0 win over Real Salt Lake.