The most solidified home fortresses in MLS were tested this weekend with the league's longest unbeaten streak at home surviving and another strong home team taken down.
Houston survived a battle with Colorado at BBVA Compass Stadium to extend its unbeaten streak at home to 36, while Sporting Kansas City were stunned at home in a five-goal thriller with Portland.
Elsewhere across the league, Montreal scooted into first place in the Eastern Conference, and FC Dallas extended their run at the top of the Western Conference.
Find out where every MLS team ranks in this week's edition of the MLS Power Rankings.
Every week, our MLS experts will rank each team from 1-19.
Each team will be given a point total for its specific ranking.
For example, the team that is ranked No. 1 is given 19 points, while the last-place team receives just one point.
We will compile the votes each week, and the team with the highest point total will be placed atop the power rankings.
Meet Our Voters
Last Week's Ranking: 19
Week 9 Result: Loss to Columbus, 3-0.
D.C. United lost their fifth consecutive game on Saturday in Columbus, and there are no signs of when the slide will end at the moment.
During their five-game slide, United have been shutout three times and have lost to the Crew twice.
Last Week's Ranking: 16
Week 9 Result: Loss to Montreal, 2-0.
Chicago's strong April ended with a loss to one of the best teams in the league at the moment.
The Fire conceded two second-half goals on the road in Montreal as they lost their fifth game of the season.
Frank Klopas and company will now have to wait a week to get their month of May under way as they have a bye next week.
Last Week's Ranking: 18
Week 9 Result: Win over Philadelphia, 2-0.
On an emotional night in Boston, the Revolution won their first game since the second week of the season.
Diego Fagundez and Lee Nguyen scored 11 minutes apart in the second half to hand the Revs a win at home over Philadelphia.
There will be no time to celebrate the win this week, as the Revs will head out to Portland for a rare Thursday night encounter at Jeld-Wen Field with the Timbers.
Last Week's Ranking: 15
Week 9 Result: No Game Played
The Sounders were the lone team in MLS that had a bye this weekend.
Seattle will make the cross-country trek to Philadelphia on Saturday to play the Union at PPL Park.
Last Week's Ranking: 12
Week 9 Result: Loss to New York, 2-1.
Another week, another last-minute heartbreak for Toronto FC.
That is what fans of the Reds were saying after Tim Cahill scored in the 90th minute to take down the team that has had horrible luck in the final five minutes of games this season.
The loss also broke a four-game unbeaten streak that Ryan Nelsen's team had going into the game.
Last Week's Ranking: 17
Week 9 Result: Draw with Houston, 1-1.
The Rapids were 25 minutes away from ending Houston's record unbeaten run at home, but it was not to be on Sunday.
The Rapids conceded in the 66th minute to their hosts and settled for a point.
Drew Moor was the only goalscorer for the Rapids with a header in the 47th minute.
Last Week's Ranking: 14
Week 9 Result: Draw with FC Dallas, 2-2.
The Whitecaps avoided their second consecutive loss to FC Dallas on Saturday thanks to two second-half goals that came in a three-minute span.
Kekuta Manneh (72nd minute) and Camilo (75th minute) brought the Whitecaps back from the depths of defeat in the second stanza at BC Place.
Martin Rennie's team will now take on Real Salt Lake for the second time this season on Saturday as it searches for its first win since March 9.
Last Week's Ranking: 10
Week 9 Result: Draw with Chivas USA, 2-2.
Cordell Cato's 76th-minute equalizer salvaged a point for San Jose on the road on Saturday night.
Before Cato's equalizer, Chris Wondolowski opened the scoring for the Earthquakes in the 40th minute.
The newest American designated player has now scored in two of his last four games, and it seems like his early-season slump is now lodged in the past.
Last Week's Ranking: 9
Week 9 Result: Win over Toronto, 2-1.
There can be a legitimate debate this week about what shined brighter for the Red Bulls in Toronto on Saturday, their yellow shorts or Tim Cahill.
Cahill had his best performance of the season for the Red Bulls by scoring in the 39th and 90th minutes.
The Australian also was the beneficiary of two superb assists by Roy Miller and Thierry Henry.
Last Week's Ranking: T-6
Week 9 Result: Loss to New England, 2-0.
Saturday was a bad day to say the least for the Union, as they fell to the Revolution in Foxborough.
The Union got just four shots on target, and the attack was fairly quiet during the second half.
John Hackworth and company will now look to avoid a losing streak on Saturday when they host the Sounders at PPL Park.
Last Week's Ranking: T-6
Week 9 Result: Loss to Los Angeles, 2-0.
Real Salt Lake failed to take advantage of a weakened Galaxy lineup at home on Saturday.
However, Jason Kreis' side was not at full strength either due to the pregame injuries suffered by Alvaro Saborio and Robbie Findley.
RSL will look to get back on track on Saturday when they welcome Vancouver to Rio Tinto Stadium.
Last Week's Ranking: 11
Week 9 Result: Draw with San Jose, 2-2.
Surprisingly there were actually fans in the seats of the Home Depot Center to watch Chivas USA draw with San Jose on Saturday night.
Just under 10,000 fans filled the stadium, and they saw their ever-improving squad score two goals within a four-minute span to start the second half.
Next week, Chivas USA will play their fourth Sunday game of the season when they visit Sporting Park to play Sporting Kansas City.
Last Week's Ranking: 13
Week 9 Result: Win over D.C., 3-0.
The scoreboard was not the only thing that was on fire in Columbus on Saturday night.
The Crew offense was also blazing hot in the first half as they put three goals past D.C. keeper Bill Hamid.
Dominic Oduro, Josh Williams and Federico Higuain all scored in the rout over the worst team in MLS.
Last Week's Ranking: 3
Week 9 Result: Loss to Portland, 3-2.
It seemed like a good night to break out the new argyle jerseys for Sporting Kansas City, especially after Chance Myers scored in the first minute.
But, the final result would not end up in Sporting's favor, as they fell for the first time at home this season to Portland.
Myers scored his first two career goals for Sporting in the loss; his second goal came in the 29th minute.
Last Week's Ranking: 8
Week 9 Result: Win over Sporting Kansas City, 3-2.
The Timbers pulled off the shock of the week in Kansas City as they took down Sporting in their home fortress.
Ryan Johnson, Darlington Nagbe and Rodney Wallace all scored for the Timbers in the five-goal shootout with Wallace netting the game-winner in the 58th minute.
The win was the third in four games for the Timbers, and it extended their unbeaten streak to six.
Last Week's Ranking: 4
Week 9 Result: Draw with Colorado, 1-1.
The Dynamo's home unbeaten streak lived to see 36 after Giles Barnes equalized the Rapids in the 66th minute.
Barnes found a gap among a plethora of Colorado defenders and sent the crowd at BBVA Compass Stadium into an uproar.
The Dynamo are now unbeaten in three games, and they will not get a chance to extend their home unbeaten streak to 37 until May 12 when Sporting Kansas City come to town.
Last Week's Ranking: 5
Week 9 Result: Win over Chicago, 2-0.
It may have taken a half for the Impact to warm up at home against Chicago, but once they did, they never looked back.
Goals by Andres Romero and Marco Di Vaio provided Montreal with its first win since March 23.
In the process of defeating the Fire, Montreal jumped back on top of the Eastern Conference thanks to the loss by Sporting Kansas City.
Last Week's Ranking: 2
Week 9 Result: Win over Real Salt Lake, 2-0.
No Donovan, no Keane, no Problem.
A week after Landon Donovan and Robbie Keane delivered an outstanding offensive performance against Sporting, the Galaxy were without their stars, but they still took care of business against RSL.
Mike Magee scored his league-leading sixth goal of the season, while rookie Charlie Rugg scored his first goal of the season to provide the Galaxy with their second consecutive win.
It was not all smiles for the Galaxy on Saturday due to the injury suffered by Jack McBean in the second half. It was revealed after the game that McBean suffered a fractured left clavicle.
Last Week's Ranking: 1
Week 9 Result: Draw with Vancouver, 2-2.
FC Dallas extended their unbeaten streak to seven games in British Columbia on Saturday, but they should have earned three points from the game based off of their early exploits.
Matt Hedges scored in the 47th minute to extend the lead to two goals, the first goal coming on an own goal by Andy O'Brien, before the hosts came surging forward in the second half.
Raul Fernandez, who made seven saves in the game, conceded two goals within a three-minute span in the second half as FC Dallas settled for a road draw.