Laba stole the ball in his own zone and came down the right flank, faking defender Stephen McCarthy before being challenged by goalkeeper Bobby Shuttleworth, who dove to block the advance.
But Laba corralled the rebound and used a right foot to send it into an open net, giving TFC (4-10-8) only its fourth win of the year but second straight.
The Revolution (8-8-6) fell into sixth place in the Eastern Conference.
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