Rublev had 21 winners against six unforced errors while reaching the Finals for the fourth straight year.
Arnaldi had 19 winners and 11 unforced errors.
Croatian wild card Borna Gojo had 22 winners and five unforced errors while upsetting sixth-seeded Tommy Paul 6-3, 6-4.
Shevchenko, from Russia, had 40 winners and just eight unforced errors while outlasting third-seeded Taylor Fritz 6-7 (7), 7-6 (6), 7-6 (5).
Griekspoor of the Netherlands need just 84 minutes to complete a 6-4, 6-3 win over Australia's Alex de Minaur, the No.
Persons:
Andrey Rublev, Russia's Daniil Medvedev, Brendan Mcdermid, Italy's Matteo Arnaldi, Rublev, Arnaldi, Daniil Medvedev, Medvedev, Bulgaria's Grigor Dimitrov, Sinner, Lorenzo Sonego, Gojo, Tommy Paul, Tsitsipas, Tomas Machac, Frances Tiafoe, France's Gael Monfils, Basel Dominic Stricker, Alexander Shevchenko, Tallon Griekspoor, Ugo Humbert, Casper Ruud of Norway, Taylor Fritz, Alex de Minaur, France's Humbert, Nicolas Jarry of, Holger Rune, Argentina's Sebastian Baez, Felix Auger, Botic van de Zandschulp
Organizations:
Russia's, Russia's Daniil Medvedev REUTERS, Erste Bank, France's Gael, Swiss, Basel, Shevchenko, Denmark, Thomson
Locations:
Flushing Meadows , New York, United States, Vienna, Croatian, Czech Republic, Switzerland, Stricker, Russia, Netherlands, Nicolas Jarry of Chile, Canada