Maguire, the world No.7, impressed with a battling 4-2 victory over hometown favourite Matthew Stevens in their last-16 tie.
His compatriot, Stephen Hendry, missed out on a quarter-final place whitewashed 4-0 by Ulster's Mark Allen.
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Maguire back on top form to book last-eight place
STEPHEN Maguire is the last Scot standing at the Welsh Open.
