Goalkeeper Alisson Becker headed a dramatic stoppage-time winner at West Brom to keep Liverpool's Champions League hopes alive.
Just as the Reds' top-four chances looked virtually over the Brazil international glanced in Trent Alexander-Arnold's corner to clinch a 2-1 win.
He was mobbed by his team-mates after his shock goal moved Liverpool to within a point of fourth-placed Chelsea with two Premier League games left.
Mohamed Salah had earlier cancelled out Hal Robson-Kanu's first top-flight goal for almost four years.
Roberto Firmino hit the post and Sadio Mane had a goal disallowed for offside as relegated Albion gave as good as they got.