Alexander Zubkov has said that he "did the impossible" by clinching gold in the two-man and four-man bobsleigh contests at the Winter Olympics.
The Russian is the sixth pilot to be crowned champion in both events at an Olympics.
The 39-year-old told reporters: "We did the impossible. It means a great deal to be able to win in Russia."
Zubkov's golds helped the host nation finish at the top of the medal table.