Derval in Olympics jeopardy
The double European silver medallist and former world indoor champion was forced to withdraw after her back went into spasm 42 minutes into her warm-up.
The Leevale star had raced in Loughborough on Saturday when she won both her races, albeit in modest times of 13.27 and 13.20, and was going for her 10th national senior title before jetting off to France today for a competition on Tuesday.