That’s true of the June 1 1-0 over the Royals because of the inexplicable orthodoxy that the win must be awarded to a relief pitcher if the start doesn’t go at least five, even if the starter was far and away the most effective pitcher of the game. That’s where awarding the win is completely within the scorer’s discretion. That’s one of the crazier scoring rules in baseball, right up there with walks don’t matter in batting averages.
Last night was different in that there was no discretion at hand. MLB rule 9.17(a) stipulates that “The Official Scorer shall credit as the winning pitcher that pitcher whose team assumes a lead while such pitcher is in the game, or during the inning on offense in which such pitcher is removed from the game, and does not relinquish such lead, unless (1) such pitcher is a starting pitcher and Rule 9.17(b) applies; or (2) Rule 9.17(c) applies (i.e., the effective pitcher discretion ruling).”