List all tournaments or create a new tournament.

GET /api/v1/tournaments?format=api&ordering=exclude_provisional&page=605
HTTP 200 OK
Allow: GET, POST, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

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            "name": "International Moon Day",
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                "username": "𝖌𝖔 𝖕𝖗𝖔66",
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            "description": "Neil Armstrong and Buzz Aldrin landed on the moon on July 20, 1969.",
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            "description": "A tournament for beginners and those new to the game.",
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            "name": "Nine*Nine, NineNineNine",
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                "name": "Go Players!!! 😃",
                "summary": "<h1> Have fun :) <h1>",
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                "username": "oldyew",
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            "description": "Here is a first Lviv Go Club Tournament for club members ONLY",
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