Career
He set a personal best time of 1:23:16 by finishing twelfth for the 20 km race walk at the Kazakh national walking championships. Kuvatov made his official debut for the 2004 Summer Olympics in Athens, where he placed thirty-seventh in the men"s 50 km race walk, with a time of 4:13:40. At the 2008 Summer Olympics, Kuvatov competed this time for the men"s 20 km race walk.
During the competition, he set an early pace and was narrowly ahead in the 4 km lap after the athletes had left the stadium.
Kuvatov entered the stadium and finished the entire run in forty-second place by ten seconds behind Serbia"s Predrag Filipović, with a time of 1:28:25.