At the other end, Ashley Barnes and Chris Wood carried a threat. They combined when the latter forced Alisson into spilling a long ball, only to react to Barnes' effort from the loose ball.
A rather dull and insipid first half sprung into life in the last five minutes of the first half. Origi crashed an effort against the bar after pouncing on Ben Mee's poorly judged back-pass.
The half time whistle blew, but the drama continued as VAR checked a coming together between Fabinho and Barnes, which caused a clash between both sets of players and afforded the Brazilian a yellow card.
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Soon after the break, the cavalry were summoned for the goal-shy Reds and both Salah and Firmino entered the action. The former forced the impressive Pope into a good save, but Burnley continued to hold strong.
With just under 20 minutes remaining, Firmino somehow missed the target after linking up with Robertson. Burnley were caught in possession at the back, but he couldn't connect with his strike properly.
Disaster struck for Liverpool seven minutes from time when Alisson fouled Barnes in the area. The striker picked himself up and slotted the spot-kick home confidently to snatch three precious points in their relegation battle.
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There are moments where blips turn into something much worse, and this feels like one of them. Liverpool didn't show nearly enough to earn the win here, creating a handful of chances in either half before a sucker-punch from the visitors. They look tired, jaded, short on confidence and there are serious questions to answer as a fourth game without a league goal passes them by. It is over a month since their last victory, excluding the FA Cup, too.
MAN OF THE MATCH - Ben Mee (Burnley)
It really was a tight call between Mee, Barnes and Pope. Burnley were the only side to hold Liverpool at Anfield last season, and their resolute defence came through again. Mee blocked from Firmino late on, and that is why he edged it.
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