As a centre-back, Mawson is usually concerned with keeping the ball out of the net, but he showed that he is a dab hand in the opposition box too at the Liberty Stadium.
After a cagey opening period, Swansea forced a series of corners, with Liverpool paying the ultimate price.
Virgil van Dijk could only head a clearance against Federico Fernandez and Mawson was quick to fire home on the turn to give the hosts a shock lead.
Check out the strike for yourself below:
22 January 2018