Great Britainās Dwain Chambers has withdrawn from the short sprints at a small Atletica meeting in Geneva this weekend, a move that has angered the meeting organisers.
Chambers has been struggling to fine high quality meets to prepare for the World Championships in Berlin in August, after being snubbed by several organisers in Europe for his use of drugs which saw him receiving a two year suspension.
A number of small meet directors have open doors for the fastest man in Europe this season, including Thurnherr and he is disappointed by Chambersā actions.
"Thatās not the way heās going to make friends," Thurnherr said, insisting that the meeting had been ready to support Chambersā comeback after he served his penalty.
The 31-year-old was down to race in both the 100m and 200m races, but decided to take part in a charity event instead.
The sprinter had an impressive indoor season where he won the 60m dash at the European indoor championships in the winter in 6.42secs.
On Saturday he ran a seasonal best of 10.06sec for the 100m, which is also a European best at the Papaflessia athletics meet in Greece.
