Supporters' Shield leaders Toronto FC crashed to back-to-back defeats, while Chicago Fire were cooled by Philadelphia Union and New York City were held to a draw.
Stunned 5-3 by Montreal Impact midweek, Toronto were unable to return to winning ways, shocked 2-1 at New England Revolution as they were denied their first Shield in MLS on Saturday.
Without star duo Sebastian Giovinco and Jozy Altidore again, Eastern Conference leaders Toronto fell behind in the 82nd minute after Revs substitute Lee Nguyen gave the hosts the lead when his shot deflected off Drew Moor and past Toronto goalkeeper Clint Irwin.
Toronto responded within two minutes via Nicolas Hasler but the Revs had the final say after Kei Kamara headed home the winner in the 87th minute.
The high-flying Canadian outfit had the chance to seal the Shield following second-placed New York City's 1-1 draw at home to Houston Dynamo.
Toronto are 10 points clear of New York City atop the east, while the Fire are four points further back after their 3-1 loss to the Union.
Once on pace for the Shield, Bastian Schweinsteiger and the Fire have struggled for consistency and momentum, and that continued against the resurgent Union, who snapped a streak of three successive draws courtesy of a Chris Pontius brace.
Vancouver Whitecaps extended their lead atop the Western Conference with a 2-1 win over Colorado Rapids.
The Whitecaps are four points clear of three other teams, including reigning MLS Cup champions Seattle Sounders, who went down 2-0 to Real Salt Lake.
Minnesota United won consecutive matches after dismantling 10-man FC Dallas 4-1, lowly DC United crushed San Jose Earthquakes 4-0 thanks to a four-goal haul from Patrick Mullins, while New York Red Bulls suffered a 3-2 loss at Columbus Crew.
|Immobile, Strakosha pen Lazio extensions|
|Beaten Read credits clinical Wallabies|
|Conte hails Chelsea´s ´desire to fight´ for Watford comeback|
|Aguero becomes joint-top scorer in Manchester City history|
|Chelsea hero Batshuayi relieved to end ´difficult moment´ against Watford|
|Verratti admits he had doubts over PSG project|
|Cheika sets sights high after All Blacks win|
|Bartomeu offers assurances over Barcelona´s LaLiga status|
|AC Milan will sell ´top players´ if they miss the Champions League|
|Chelsea 4 Watford 2: Batshuayi, Azpilicueta spare champions´ blushes|
|Darren Fletcher makes 100th consecutive Prermier League appearance|
|Carrasco´s attitude not a problem, says Simeone|
|Allegri happy to win ugly at Udinese|
|Barcelona approve €897million budget following record revenue in 2016-17|
|Lineker´s Benzema criticism embarrassing - Zidane hails Madrid striker as ´the best´|
|Bayern Munich announce record €640m turnover|
|Gasly denied chance of Super Formula title by typhoon|
|Australia claim long-awaited win over All Blacks|
|A-League Review: Brillante completes comeback in thrilling Sydney derby|
|Bakayoko starts for Chelsea against Watford|
|Not many teams can stop us scoring – Smalling hits back after United criticism|
|Halep relishing world number one battle in Singapore|
|Bakayoko: I´m not Chelsea´s new Matic|
|Manchester United fan Werner still dreams of Premier League move|
|Tigers lose Tamim for rest of South Africa tour|
|Manchester City playing like Brazil, says Jesus|
|Mbappe, Dembele and Jesus named Golden Boy top three|
|Thomas shares lead with Brown in Jeju|
|Marquez grabs pole as Dovizioso struggles at Phillip Island|
|Warriors get season on right track, Cavaliers remind Bucks who´s boss|
|Valverde: Barcelona couldn´t sign Mbappe|
|Altuve, Verlander star as Astros force game seven against Yankees|
|Kane: I´d love to spend whole career at Tottenham|
|Bolt wants to begin football career in 2018|
|What the f***? – Pochettino reveals Madrid selection questions|
|Mourinho plays down Conte spat|
|Liverpool must make Coutinho, Can want to stay – Klopp|
|Marshawn Lynch suspended for one game for contact with official|
|I´m not a dirty player - Barr rejects accusations over hit on Rodgers|
|Late Lyon comeback sinks Sale|
|Dimitrov boosts ATP Finals chances as Goffin, Anderson falter|
|Barcelona star Suarez granted rest by Uruguay|
|I don´t want to hide - Bilic takes responsibility for humbling West Ham defeat|
|Bath look at home in the wet in battling win over Scarlets|
|F1 Raceweek: Fourth straight Texas triumph could secure title for Hamilton|
|´Magician´ Conte spells out willingness to fight at Chelsea|
|Otamendi and Stones making light of Kompany absence for Guardiola|
|Goerges dashes hopes of all-Russian Kremlin Cup final|
|West Ham 0 Brighton and Hove Albion 3: Murray double piles pressure back on Bilic|
|NBA icon Kobe Bryant meets Neymar and Mbappe on PSG visit|
|Chris Paul to miss Rockets´ home opener with sore knee|
|Dyche not ´running away´ from Burnley as Leicester links intensify|
|UEFA fails to fine Spartak over racist chants in Youth League game|
|Can committed to Liverpool despite contract impasse|
|Albatross helps Luiten maintain narrow Valderrama lead|
|Bernat steps up recovery for Bayern comeback|
|Hasan heroics and Malik might leave Sri Lanka stumped yet again|
|Baker out as Nationals manager|
|Higuain has ´nothing to prove´ despite latest Argentina snub|
|Scotland forward Hardie suspended|
|Suarez struggles no concern for Barca boss Valverde|
|Emery: Neymar needs time to become PSG´s Messi|
|Sarri could have been finance minister! - Spalletti marvels at Napoli boss´ rise|
|Douglas Costa secures Brazil recall for Japan and England friendlies|
|McTominay lands new Manchester United deal|
|Brown blow for Scotland and Glasgow|
|Verstappen signs new Red Bull deal to 2020|
|Rose ready for Spurs return, but won´t start vs Liverpool|
|Koeman confident Everton signings will come good|
|Under-fire Burki lands new four-year Dortmund deal|