NICK Morris will ride for Pirates in tomorrow's double-header against Somerset after Danny King was ruled out.
Leicester and Ipswich charger King had been due to guest home and away against the Rebels.
He had been set to stand in for Krzysztof Kasprzak.
But King crashed heavily on his third ride for Ipswich at Sheffield tonight and retired from his fourth outing.
King was seen to by paramedics following his heat 11 spill.
Pirates promoter Matt Ford moved quickly to secure the services of Swindon's Morris.
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