Евгени Донской

In 2010, Donskoy played doubles with the British player Morgan Phillips at the Seville Challenger, losing in the first round.

By 2013, Marat Safin had built a coaching team for Donskoy that included Morgan Phillips.

Donskoy entered 2013 Australian Open's main draw for the first time, reaching the third round and defeating 23rd seed Mikhail Youzhny en route. He also pushed Andy Murray to three sets in the Indian Wells Masters 1000 event.

Consequently, Donskoy made his Davis Cup debut in Europe/Africa Zone Group I match against Great Britain in Coventry. Donskoy won the first rubber against James Ward, 4–6, 4–6, 7–5, 6–2, 8–6, to help give Russia a 2–0 lead heading into the doubles rubber the following day. Great Britain won the doubles rubber, where Ward opened the day. Ward defeated Dmitry Tursunov, 6–4, 5–7, 5–7, 6–4, 6–4, to level the tie. Dan Evans ranked No. 325 would eventually complete a turnaround, with a straight sets victory over world No. 80 Donskoy.

Also for the first time, Donskoy entered the 2013 French Open's main draw, beating Jan-Lennard Struff in the first round.^[] At the 2013 TOPSHELF Open held in 's-Hertogenbosch, he took out third seed John Isner in the first round and beat Robin Haase in the second to reach his first ATP Tour quarterfinals.^[]

In December 2014, Donskoy decided to join the team of Boris Sobkin, coach of Mikhail Youzhny.

In 2016, Donskoy debuted at the Summer Olympics. He defeated 7th seed David Ferrer in the second round, but then lost to Steve Johnson in the third.^[]

In 2017, Donskoy beat Australian Open champion Roger Federer in the second round of the Dubai Tennis Championships, having saved three match points in the second set, trailing 5–2 in the final set and down 5–1 in the final set tie-breaker. This was Donskoy's first career win over a top-ten player.

At the 2021 US Open he qualified for his ninth consecutive main draw appearance at this Major. He lost to Félix Auger-Aliassime in the first round.