Is it permissible to participate in martial arts contests like wrestling and karate and the like, which usually lead to some harm?

Fatwa, posted 4.22.2010, from Iraq, in:
Religious Authority: 
Ali al-Sistanti
Website URL: 
http:///www.sistani.org
Fatwa Question or Essay Title: 
Is it permissible to participate in martial arts contests like wrestling and karate and the like, which usually lead to some harm?
Websites and Institutions: 
The Official Website of Grand Ayatollah Al Uzma Seyyid Ali al-Sistani

Yes, as long as no serious harm is done.

هل یجوز المشارکة في المباریات القتالیة کالمصارعة والکاراتیه ونحوها مما یؤدي غالباً الی الضرر المعتد به؟ یجوز مع الأمن من الضرر البلیغ.

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