The Union's defensive miscues are becoming a trend. For the third straight Major League Soccer game, the Union allowed three goals Saturday night.
Unlike Wednesday's 4-3 win over the Chicago Fire, this time the Union couldn't survive.
After taking a 1-0 lead, the Union allowed the next three in Saturday's 3-2 loss to the Vancouver Whitecaps before 17,225 fans at Talen Energy Stadium.
The Union (7-5-5, 26 points) remained in first place in the Eastern Conference, while Vancouver improved to 7-7-3 (24 points).
It was the first home loss of the season for the Union, who are 6-1-2 at Talen Energy Stadium.