The Pro Swim Series competitions took place from January 14 to 18 in Austin, Texas. Petrashov participated in three races.
The final race in the 100 meters breaststroke took place early in the morning on January 15, where the Kyrgyzstani finished second, earning a silver medal. He lost to American swimmer Matthias Vann by just 0.1 seconds.
In the next stage of the tournament, which took place on January 17, Petrashov again showed excellent results, finishing the 50 meters breaststroke with a time of 27.12 seconds. This time he again took second place, losing to Vann.
On the same day, the races for the 200 meters breaststroke began, where Petrashov successfully passed the preliminary rounds and advanced to the final.
The final for this distance took place on January 18, and Denis again took second place, winning his third silver medal at the tournament. He was outpaced by four-time Olympic champion and seven-time world champion Léon Marchand from France.
