SWEDE Daniel Nermark will now be guesting for the Robins at Leicester tomorrow.
With Peter Kildemand and Troy Batchelor missing due to Grand Prix qualifying in Croatia, Robins boss Alun Rossiter had previously drafted in Davey Watt to replace Batchelor, with rider replacement being used to cover Kildemand.
However, after Watt suffered a back injury riding in Germany yesterday, Nermark has now been selected from the very limited pool of riders available to Rossiter.
"It's really tough because there are so few riders available to cover, but Daniel is a good rider," Rossiter said.
"He can make starts which is really important at Leicester."