In 2014, he emerged as the clear victor in a number of prominent Russian tournaments, including the Moscow Open B and the Moscow Blitz Championship. He also played on the Russian team that won the silver medal in the 2015 European Team Chess Championships, and he participated in the Euro Club Cup in 2016, further expanding his international presence. Additionally, Lopushnoy came fourth in the 2018 Moscow Open A and fifth in the equally prestigious Aeroflot Open the same year.
The chess player attributes his success to his coaches, Sergei Ivanov and Gennadij Timoscenko. He furthered his studies under grandmaster Aleksander Rakhmanov. Lopushnoy's ambitious game style is also noted, with an aggressive playing method that compounds the pressure on his opponents, while also allowing possibilities for dynamic counterplay.
Information on Denis Lopushnoy's professional career and accolades is sourced from individual statistics provided by FIDE, the governing body of international chess competition.