Jay Rodriguez scored twice as West Bromwich Albion stunned Liverpool with a 3-2 FA Cup fourth-round win at Anfield on Saturday in a tie overshadowed by the Video Assistant Referee.
A remarkable first half on Merseyside saw the Baggies, second-bottom in the top flight, race into a 2-1 lead inside 11 minutes against a Liverpool team pushing for a place in the Champions League.
Roberto Firmino put Liverpool ahead in the fifth minute after a mix-up, only for Rodriguez to hit back with two well-taken goals.
VAR, being tested in English cup competitions this season, then took centre stage.
Referee Craig Pawson denied West Brom a third goal after ruling out Craig Dawson’s effort by using VAR to determine that Gareth Barry was offside.
Pawson then become the first English referee to consult a touchline monitor himself before awarding Liverpool a penalty for a foul on Mohamed Salah by Jake Livermore.
That prompted furious protests by the visitors, with Barry booked for dissent, only for Firmino’s spot-kick to hit the crossbar.
There was yet another VAR review prior to the break, before a Joel Matip own goal that put West Brom 3-1 up was allowed.
Egypt striker Salah gave seven-time FA Cup winners Liverpool hope in the 78th minute with his 25th goal in just 32 appearances for the Reds, but Alan Pardew’s Premier League strugglers still booked their place in the last 16.
“I thought we deserved what we got today,” West Brom manager Alan Pardew told BT Sport.
Meanwhile beaten Liverpool manager Jurgen Klopp insisted: “West Brom deserved it, they scored three goals, us only two, and we have to blame ourselves.”
In another FA Cup match, a late strike by Harry Kane rescued Tottenham Hotspur from a shock defeat against fourth-tier side Newport.
Padraig Amond elicited celebrations at Rodney Parade when he took Newport ahead with a header in the 38th minute. England striker Kane however spared blushes for Tottenham, tapping in from close range following Son Heung-Min’s flick-on for his 30th goal this season.
The match ended 1-1 and there will therefore be a replay.