Yankees broke MLB unwritten rule during perfect game

Know the code: Baseball's unwritten rules

Yankees' Corey Kluber throws no-hitter: Here's a list of Yankees no-hitters and perfect games

You dumbass, we just threw a no-hitter: The behind-the-scenes story of how six Astros pitchers no-hit the Yankees - The Athletic

Masahiro Tanaka: Breaking News, Rumors & Highlights

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The unwritten rules of baseball

Don Larsen, Only Pitcher Perfect in World Series, Dies at 90 - Bloomberg

Top 5 times MLB players broke unwritten rules #baseball #sports #team

Four Perfect Games, Nine No-hitters By 12 Yankees Pitchers

MiLB Benches clear after game when player bunts to break up a no-no. : r/baseball

If a fielder drops a foul ball and the batter is subsequently retired, can the pitcher get credit for a perfect game? - Quora