Zagreb, August 30, 2017-Qatar's Abderrahaman Samba claimed the gold medal of the 2017 Zagreb IAAF Challenge Meeting on Tuesday.
Abderrahaman Samba clocked a time of 48.70 second to clinched the first place and the gold medal.
Kyron Mcmaster of British Virgin Islands finished second while Louis Jacobus van Zyl of South Africa settled in third place.
Earlier this month, Qatar's Samba qualified to the 400m hurdles final at the World Athletics Championships in London.