Dmitry Andreevich Rozanov and Alisa Viktorovna Bondareva continued Russia's superb start to the 23rd Summer Deaflympics in Samsun by winning the men's and women's cycling time trial respectively today.
Rozanov's success followed the time trial gold and points silver medals that he won at the 2013 edition in Sofia.
The 28-year-old produced a superb performance to win the 50 kilometres race against the clock in 1 hour 07min 55.60sec.
Adrian Babic of Slovakia finished in a distant second place in 1:10:40.50.
It proved a momentary blip to Russian domination, though, as Ivan Vladimirovich Makarov took bronze in 1:11:06.30.
The world's largest country also enjoyed victory in the corresponding women's race, with Bondareva triumphing over the 35km course in 48:37.921.
Ludy Nava Correa took Venezuelan silver in 49:21.322 while the final place on the podium was taken by Yukari Minohara of Japan.
She managed 49:54.123 for bronze.
Russian swimmers also enjoyed success today as competition began at the Atakum Olympic Swimming Pool.
This included a world record for Viktoriia Terenteva in the women's 200 metres freestyle.
The 18-year-old clocked 2:04.64 to obliterate the field.
Hu Yuchen of China finished over 5sec behind when touching in 2:09.83 for second.
Bronze was taken by Mariya Rezhylo of Ukraine in 2:10.16.
More than 3,000 athletes from 97 countries are taking part at the premier event for deaf athletes in the Black Sea city.
They are competing in 20 sports - athletics, badminton, basketball, beach volleyball, bowling, road cycling, football, golf, handball, judo, karate, mountain bike, orienteering, shooting, swimming, table tennis, taekwondo, tennis, volleyball and wrestling.