A strong second half from the Montreal Impact saw them move to the top of the Eastern Conference standings with a 3-0 win over the New York Red Bulls.
After a scoreless first period, Dominic Oduro opened the scoring for the Impact on the stroke of the hour-mark courtesy of a blistering counter-attack.
Argentine attacker Ignacio Piatti added to his opening-round brace to double the advantage in the 71st minute before Anthony Jackson-Hamel made sure of the result in stoppage time.
Houston Dynamo atoned for their first-round stalemate with a 5-0 demolition of FC Dallas on Saturday.
The Dynamo were up 4-0 inside the first 27 minutes after Andrew Wenger set up David Horst and Ricardo Clark before scoring one of his own, while Dallas defender Matt Hedges put one into his own net.
Will Bruin got himself on the scoresheet with five minutes left to play for his first goal of the 2016 MLS season as the Dynamo moved to second in the Western Conference.
They are two points adrift of Sporting Kansas City, who moved top courtesy of a 2-1 win against a 10-man Vancouver Whitecaps.
Dom Dwyer scored both of Sporting's goals in the first half, with his first a blistering strike from distance, before Jordan Smith was given his marching orders for a nasty challenge on Graham Zusi just before half-time.
Pedro Morales pulled one back from the penalty spot in the 70th minute, but Sporting were able to hold on to win their second game and condemn the Whitecaps to a second-straight loss.
Meanwhile, the LA Galaxy could not repeat their opening-day victory after suffering a 1-0 loss against the Colorado Rapids.
The game appeared to be heading for a 0-0 draw but a poor clearance from Galaxy defender Daniel Steres gave substitute Marco Pappa the opportunity to rifle home the winner in the 95th minute.
In other results, a brace from Chris Pontius saw the Philadelphia Union pick up a 2-1 win away to the Columbus Crew, a late goal from Jamison Olave gave Real Salt Lake a 2-1 win against the Seattle Sounders, while the New England Revolution and DC United played out a 0-0 draw.