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Is there a formal version of "he's the real thing"?

As in:

  • Man, she's really good at tennis!

  • She plays national. She's the real thing.

2

This sounds pretty formal in this case:

  • She plays national. She's an authentic athlete.
  • She plays national. She's an accomplished tennis player.
1

There are probably a dozen different formal or almost formal versions, e.g.:

X is a world-class tennis player.
X plays tennis at the professional level.
X is a top-level tennis player.

I think you probably get the idea.

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