Tverdovsky was born and raised in the mining city ofDonetsk, Ukraine. In his earlier years, the city had no artificial ice surfaces so his introduction to the game was through street hockey. In 1983 Tverdovsky began his interest in hockey at the city's only fully functioning skating arena. Though this was originally intended for figure skating, low turnout compelled city officials to create a year-round hockey school. Open tryouts were held and 7-year old Tverdovsky finally had a chance to learn the sport, but his inexperience with skating initially held him back. He recalls "I tried everything, even holding my hands on the boards, but the progress was slow." The team coach identified the problem being weakness in his ankles, and put him on a training regimen which included running on beach sand and stones barefoot. In 1991, the system which froze the ice at his local arena became permanently broken and his amateur career in hockey was potentially over. By this time he was one of the best players, as well as the best skater on his team. "I was a defenseman all my career and I always loved rushes," he says. "It didn't take a lot of stickhandling for me to score lots of goals - I just skated around the opponents." This talent did not go unnoticed, as Yan Kaminsky, the coach of the Dynamo Moscow junior team at the time, noticed Tverdovsky and invited him to come to Moscow. Kamentsky soon left Dynamo and accepted a job with Krylya Sovetov, also in Moscow. His mother, Alexandra, did not want her 15-year-old son to leave home, but his father, Fedor, convinced her that it would be for the best. "It wasn't an easy time for me. I lived in a dormitory, missing my family, especially my 7-year-old sister," Oleg recalls.
Russia
Though missing his home in Ukraine, Oleg made a lot of progress to his game while in Russia. He and his teammate from Donetsk, Yuri Litvinov, practiced eight hours a day, four times a week. Igor Dmitriyev, the coach of the senior Krylya Sovetov team signed the 16-year-old defenseman to a contract with the professional club, despite the fact that Oleg never played for the junior team. "When I saw him for the first time I was amazed by his skating ability," says Dmitriyev, then the head coach of the Russian National Team. "He carried the puck so well, he had so much confidence that I decided to give him a chance." For two years, he lived in the team's training camp facility, which was located on the outskirts of Moscow. Without a car, Oleg was forced to spend most of his time at the facility itself.
Tverdovsky played the 2007–08 season in Russia for Salavat Yulayev Ufa, where he played for the next five seasons. When he left the NHL, Tverdovsky was still under contract with the Los Angeles Kings. This was able to happen because there was no transfer agreement between the NHL and the Russian Hockey Federation. He was also selected as a reserve by Team Russia for the 2010 Winter Olympics should an injury occur during the tournament. He was traded to Metallurg Magnitogorsk in the 2011–12 season, and played part of the next season with that club before retiring.
Personal life
Tverdovsky lives with his wife and children in the United States.