The popular Norwegian netted the opener at The Hawthorns before Florent Sinama-Pongolle made it 2-0.
A brilliantly executed free-kick from Steven Gerrard led to the third goal before Riise smashed a simply unstoppable effort home that almost broke the back of the net.
Luis Garcia made it 5-0 to round off a brilliant Boxing Day display from the Reds.
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Registered users: Relive the Boxing Day win at West Brom from 2004
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