Two MLS Cup Playoffs rivals, the LA Galaxy and Vancouver Whitecaps played out a 0-0 draw in Los Angeles.
The Texas derby proved to be another testy affair, with FC Dallas coming from a goal down to score three and take three points in the process.
Columbus achieved their second shutout in three game, with goals from Ethan Finlay and Justin Meram giving them three points.
Ignacio Piatti claimed his 14th goal of the season, which proved to be the game winner agasint their Canadian rivals Toronto FC.
Patrick Mullins scored three goals while Patrick Nyarko added a goal and two assists as D.C. United beat the 10-man Chicago Fire 6-2 on Saturday.
Philadelphia continued their good form, winning 2-0 over nine man Kansas City, with Roland Alberg scoring a stunner.