Rokoduguni replaces Elliot Daly (Wasps) who was withdrawn from the squad after picking up an injury (knee) on the weekend.
The remaining England players who played on Sunday have joined up with the squad today.
Yesterday, Matt Mullan and Elliot Daly (both Wasps) did not travel to Portugal with the England squad on Sunday after picking up injuries over the weekend. Mullan (elbow) and Daly (knee) will remain with their club for treatment and will have scans over the next couple of days.
On Thursday Eddie Jones named a 34-man squad ahead of their Old Mutual Wealth Series opener against Argentina.
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