Wilder Cartagena's stoppage-time goal snapped a 2-2 deadlock and lifted the Lions into the Round of 32.
The Lions conceded a highly questionable penalty at the end of the first half, then battled back to equalize and won the postgame shootout.
Antonio Carlos and Duncan McGuire led the Lions to a comeback victory in Atlanta.
After conceding a pair of goals on first-half set pieces, the Lions never mounted any kind of challenge.
For the second straight year, the Lions dominated Toronto FC at home, winning 4-0.
The Lions made it six in a row at home without a loss with a win over the Fire.
The Lions put in a great effort but it fell a bit short with Mauricio Pereyra missing a gaping net from right in front late in...
Another home match against the Union with Alex Chilowicz as the match referee ends controversially, with a 2-2 draw.
The shorthanded Lions were never really in this one and lacked sharpness throughout.
Facundo Torres and Ramiro Enrique scored and the Rapids had two men sent off in an eventful match.
Much of what Atlanta is currently doing in their formation is due to both injuries and the fact that the…