Answered January 12th, 2020

22 pitchers are tied for the most games pitched in a loss with exactly 0 runs allowed and 6.0+ innings pitched, with 1 game.

most season games with 6 ip by a pitcher in a game with 0 r and 0 w
Interpreted as:
most season games with 6 or more ip by a pitcher in a regular-season game with 0 r and 0 w

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