Albert Rusnak s hat-trick propelled the Seattle Sounders to a shock 4-0 win over the 10-man Columbus Crew.
The short-handed Crew were dealt a huge blow when, in the second minute of first-half stoppage time, goalkeeper Abraham Romero saw red for a foul on Jordan Morris.
With regular goalkeepers Patrick Schulte and Nicholas Hagen on international duty, Crew coach Wilfried Nancy had to turn to centre-back Sean Zawadzki.
But it took Seattle just four minutes to get the better of the stand-in, with Rusnak converting the resulting free-kick following Romero s foul.
Morris doubled Seattle s tally on the hour mark, with Rusnak then completing his hat-trick with a quickfire double.
Columbus are third in the Eastern Conference, while Seattle are fifth in the West.
Four goals in an un(four)gettable win Highlights
— Seattle Sounders FC (@SoundersFC)
Data Debrief: Rusnak turns from provider to scorer
Rusnak had never scored a hat-trick before, but this one will be memorable for several reasons. It also came on the back of the midfielder creating six chances in last week s loss to the Portland Timbers, which was the most by any Sounders player in a single regular-season game in over three years.
The defeat was just Columbus second at home in the space of 39 matches, though Seattle have now won six of their nine regular-season visits to Columbus, the highest winning percentage of any MLS team to have played the Crew eight or more times on the road.