Fokina won the match in three sets to one, 6-4, 5-7), 6-4, 6-4.
Fokina thus equaled his best achievement at the US Open, having reached the fourth round in 2020.
But last year’s quarter-final at Roland Garros remains his best Grand Slam result.
Fokina is waiting in the next round, the winner of the match between Britain’s Andy Murray and Italy’s Matteo Berrettini.
In the women’s singles competitions, Russian Veronika Kodermetova qualified for the fourth round, after easily defeating Hungarian Dalma Galvi, in two sets without a response, 6-2 and 6-0.
Thus, Kodermetova ranked 18th in the tournament, hit a date in the next round with Tunisian Ons Jabeur, ranked fifth in the tournament, in the first access for the two players to the fourth round of the US Open.
China’s Zhang Chui also booked her place in the fourth round, defeating Canadian Rebecca Marino in two sets without a response (6-2) (6-4), thus achieving the best achievement in her career at the US Open.
In the next round, the Chinese are waiting for the winner of the match between American Madison Keys and her compatriot Coco Gauff.
