The Japanese side went down to a upset loss at home as they lost further ground on league leaders Tampines Rovers
Woodlands Wellington achieved the double over Albirex Niigata (S) in the league this season after a slender 1-0 victory over the Japanese outfit at the Jurong East Stadium.
Moon Soon Ho scored the only goal of the match six minutes before the end of regulation time to continue the Rams' impressive form in the league as they built on the victory over Brunei DPMM a week ago.
Earlier in March, Woodlands also collected three points against the same opponents as they walked away 2-1 victors at the Woodlands Stadium.
Mid-season signing Theerawekin Seehawong started the match despite still carrying a knock, which he had sustained during a training session, and the Thai cut a cool and calm figure for Woodlands in the middle of the field.
The White Swans were unlucky not to come away with anything despite dominating possession and coming close to scoring on several occasions.
Woodlands had a better start to the match with Chang Jo Yoon and Moon trying their luck from long range but they did not trouble Albirex custodian Hiroaki Hara.
Midway through the first half, Sugiyama’s side managed to find their rhythm and started to display some very disciplined build-up play from their own half.
Their passes were a delight to watch but at times, it was a problem of too many touches for their own good as the players were shy to pull the trigger even when they were in the penalty box, causing shouts of frustration form their club faithful in the stands.
It was a mundane second half though, with both sides soaking in the pressure whenever the other side was on the ball.
With the clock ticking down, Woodlands upped their tempo and switched gears instantly from defending a corner to launching a counter-attack in the 84th minute.
Theerawekin started the move in his own half and sent the ball forward to Moon who, despite being marked by two Albirex players, managed to dazzle his way into the penalty box before striking the ball into the top corner for the match winner.
With the win, Woodlands climb to fifth in the table with 26 points while Albirex remain in second spot on 33 points, although they have played two games more than leaders Tampines Rovers.