West Brom blitzed Burnley with three first-half goals before going on to equal their biggest victory under Tony Pulis.
The Baggies beat West Ham 4-0 in February 2015, the month after Pulis' arrival as head coach, and they repeated the feat on Monday night to climb up to ninth place in the Premier League table.
Matt Phillips struck after only four minutes and when James Morrison doubled the lead with 16 minutes on the clock, it was clear that Sean Dyche's 50th Premier League match as Burnley boss would be one to remember for all the wrong reasons.
Darren Fletcher effectively ensured all three points and successive league wins for West Brom for the first time since the turn of the year with a third goal just before half-time.
Salomon Rondon got the goal his performance deserved in the second half to complete the rout and Pulis could even afford the luxury of taking off the Venezuela international with 12 minutes remaining to give him extra rest ahead of the trip to Hull at the weekend.
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