beginner's luck

American  

noun

1. the initial good fortune or success commonly supposed to come to a person who has recently taken up a new pursuit, as a sport or game.

   Catching a large trout the first time you go fishing is simply beginner's luck.

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beginner's luck Idioms  

1. Good fortune in a first attempt or effort, as in I often use a brand-new recipe for a dinner party; I trust beginner's luck. [Late 1800s]

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Etymology

Origin of beginner's luck

First recorded in 1895–1900

Example Sentences

It was beginner’s luck, not skill, that saved him from slamming into that mountain, Reynolds said.

From Los Angeles Times

I still think it's beginner's luck, but then lockdown was a long time ago.

From BBC

The 29-year-old initially thought it must have been beginner's luck - but it kept happening.

From BBC

Was the success of “Once” beginner’s luck or simply sparks cast off by one of its leads, Glen Hansard, Carney’s longtime bandmate in the Frames?

From New York Times

And these aren’t cases of beginner’s luck.

From Washington Post