Sidorenko made his
ATP Tour singles main draw debut at the
2006 Open 13 on hard courts in
Marseille, France. Having received a wild card granting him direct entry into the first round, he was defeated by
Evgeny Korolev of Russia in three sets
6–2, 4–6, 1–6. He made his
ATP Tour doubles debut at the same tournament, receiving a wild card into the doubles main draw as well alongside compatriot
David Guez. They would lose in the first round to another French partnership in,
Gaël Monfils and
Paul-Henri Mathieu in three sets
3–6, 6–3, [6–10]. He lost in the first round of the
2007 French Open against
Werner Eschauer as a wildcard, when he had to retire. In 2008, he lost to
Younes El Aynaoui in the first round of the
Munich Open in Germany. Sidorenko has reached 16 career singles finals, posting a record of 5 wins and 11 losses which includes a 1–1 tally in
ATP Challenger Tour finals. He won the
2016 Saint Brieuc Challenger tournament in France, defeating
Igor Sijsling 2–6, 6–3, 7–6(7–3) in the final to claim the championship. Additionally, he has reached 25 career doubles finals, posting a record of 10 wins and 15 losses which included a 2–1 record in
ATP Challenger Tour finals. ==Performance timelines==