The match was over already after 51 minutes.
In terms of ranking, it was a good position for 96-ranked Mikael Ymer to reach the semifinals of the ATP tournament in Gstaad, Switzerland.
But Kopriva came to the match in great shape after defeating Canadian world champion Denis Shapovalov on Thursday.
And he had not lost his form during the night.
Kopriva quickly went up to 4-0 and won the first set easily with 6-1.
In the second set, the Czech dominance continued.
Kopriva was the security itself while Ymer had nothing to oppose.
The Czechs won the first three games before Ymer had the chance to serve home a reduction.
But Kopriva broke the Swede's serve again and made sure that Ymer's uphill became increasingly steep.
Kopriva finally won the match with a clear 6–1, 6–0 and sent home Sverigeettan from the ATP tournament in Switzerland after only 51 minutes of play.