A stunning first-half performance saw Swansea bring high-flying West Brom's excellent run to a crashing halt with a 3-1 win at the Liberty Stadium.
The Baggies were simply overrun in the opening 45 minutes, a ninth goal of the season for Michu and a Wayne Routledge double giving their hosts a 3-0 lead.
Romelu Lukaku pulled one back just before half-time but, despite an improved second-half display, that was as good as it got for Steve Clarke' side.
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