Ben Davies of Swansea City celebrates with team mates after scoring the first goal during the Barclays Premier League match between West Bromwich Albion and Swansea City at The Hawthorns on September 01, 2013 © Getty Images

Despite an end-to-end start to the match, it was Swansea who looked far more threatening and took the lead in stylish fashion midway through the first half.

Hernandez managed to dig out a cross from the right and it found left-back Davies coming in at the far post who crashed a volley into the roof of the net.

Swansea City's Welsh defender Ben Davies scores his goal past West Bromwich Albion's Welsh goalkeeper Boaz Myhill during the English Premier League football match between West Bromwich Albion and Swansea City at The Hawthorns in West Bromwich on September © Getty Images

Nicolas Anelka, making his return for West Brom, had a chance to equalise just after the half-hour mark, but he flashed his shot wide.

Chances were few and far between at the start of the second half, with Wilfried Bony almost connecting with another Hernandez cross.

West Brom centre-back Gareth McAuley had an opportunity to level the score but sent his header from six yards over the crossbar in the 71st minute.

Hernandez rattled the crossbar with a curling effort with five minutes left but made sure of the result moments later by finishing from Michu's calm pass.

Pablo Hernandez of Swansea celebrates with team mates after scoring their second goal during the Barclays Premier League match between West Bromwich Albion and Swansea City at The Hawthorns on September 01, 2013 © Getty Images

Swansea's first win of the season sees them climb off the bottom of the table and up to 16th, while West Brom slump to the foot of the table with just a single point.