Croydon Harriers Tasha Danvers and James Dasaolu will both miss this weekend's European Team Championships with injury.
Olympic bronze medallist Danvers captained her London South team to victory in the inaugural Super8 event in Cardiff last Wednesday, comfortably winning her 100m hurdles event before suffering a hamstring injury in the medley relay.
Sprinter Dasaolu, who was named in the relay squad for the team championships, damaged his hamstring at the IAAF Golden League meeting in Berlin on Sunday.
The 21-year-old pulled up 20m from the line and finished ninth in a race won by Antigua and Barbuda's Daniel Bailey.
While he is still officially part of the squad, it looks unlikely he will be fit enough to compete.
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