Without saying whether a closer is required. . .I think it's more likely that those wins come against other weaker teams, unless the 100-loss team is riding a hot hand, or they play a short series against a good team hurt by IL issues. Then you may get a SSS split or see them win a series.
Here's OAK for last year. Scroll down to the individual team records.
https://www.baseball-reference.com/teams/OAK/2023-schedule-scores.shtml#all_win_loss
v. BAL 1-6.
v. NYY 1-5.
v. SEA 1-12.
v. HOU 3-10 comes close. And TEX 4-9 looks comparatively great. But generally, so on, so forth. SSS exceptions: ATL 2-1, MIL 3-0.
Conversely they had success against: CHW 4-3, DET 4-3, KCR 4-2, PIT 2-1, SFG 2-2, LAA 6-7, COL 2-1 That's 24 of their 50 wins.
As a subset of the above - against other hundred-loss teams: CHW 4-3, KCR 4-2, CRR 2-1. Total 10-6.