In Monday night's game, Sugano wasn't eligible to be credited with the Win, because he didn't pitch at least five full innings.
The official scorer could have given the win to Jaden Hill, who was the pitcher of record after the fifth inning, when his team had a lead which they did not relinquish. There are probably many relief pitchers in the past who have been given wins after the scenario described above.
If that had been the case, Dollander would have been credited with a Save, because even though he entered the game with an 8 run lead, he did finish the game, and he pitched at least three innings.
This situation came up more often when closers, (usually referred to as 'firemen'), often entered games in the 7th or 8th inning with runners on base, and they protected a slim lead. The one-inning guy who gets 40+ saves mainly by pitching the ninth inning and not blowing a 3 run lead started in the early 1980's. Perhaps the 'relief ace' who best exemplifies that role from that time period is Jeff Reardon.
I think the official scorer would have credited Hill with the win and Dollander with the save if Hill had pitched the 6th inning, and Dollander had pitched the 7th to 9th.