Rescheduled fixtures now link to each other

/fixtures now returns two new fields, rescheduled_from and rescheduled_to, so you can follow a game when it gets a new fixture ID.

Most reschedules keep the same fixture and only update start_date. Sometimes, though, the original fixture is cancelled and the game is published again under a
new fixture ID. This happens when:

• a postponed game has no new start time after a set window (24 hours by default, 36 hours for tennis, 120 hours for NFL)
• a baseball game moves to a different local date before it starts
• the data provider reissues the match under a new ID, which is common in tennis

Until now, nothing connected the cancelled fixture to its replacement. Now both fixtures point at each other:

Field               Set on                   Value
  ------------------  -----------------------  ---------------------------------------
  rescheduled_to      The cancelled original   ID of the fixture that replaced it
  rescheduled_from    The replacement          ID of the cancelled fixture it replaces

Example

This Czech First League match was postponed from October 24 to December 2:

curl "[https://api.opticodds.com/api/v3/fixtures?id=20261024F07FBDC1\&id=20261202F07FBDC1](https://api.opticodds.com/api/v3/fixtures?id=20261024F07FBDC1\&id=20261202F07FBDC1)" <br />-H "X-Api-Key: YOUR_API_KEY"

{
  "data": [
    {
      "id": "20261024F07FBDC1",
      "status": "cancelled",
      "start_date": "2026-10-24T13:00:00Z",
      "league": { "id": "czech_republic_-_first_league" },
      "rescheduled_from": null,
      "rescheduled_to": "20261202F07FBDC1"
    },
    {
      "id": "20261202F07FBDC1",
      "status": "unplayed",
      "start_date": "2026-12-02T16:30:00Z",
      "league": { "id": "czech_republic_-_first_league" },
      "rescheduled_from": "20261024F07FBDC1",
      "rescheduled_to": null
    }
  ]
}

Notes

• Every sport: this applies to every sport and league.
• Where the fields appear: on /fixtures and on the fixture objects inside odds responses.
• History: reschedules from roughly the last 90 days are already linked.
• Not linked: a fixture cancelled because its competitors changed is a different game, so it isn't marked as rescheduled.