Odds API by market / MLB

MLB Pitcher Outs Recorded API

Live pitcher_outs odds across every book that posts it, in one REST call — and, unlike any other odds API, every one of those outcomes settled against the official result once play ends.

No credit card. 1,000 requests / day on the free tier.

What MLB pitcher outs recorded is

Outs recorded, which is innings pitched multiplied by three. Books quote outs rather than innings because a two-thirds inning is not a clean line.

How we settle it. Graded against innings pitched in the box score, converted to outs.

19
books quoting it on the next event
4/8
of the next MLB events carry it right now
2,312
outcomes settled in the last 4 days

Every number on this page is measured against the live API, never copied from a spec sheet. Last measured 30 September 2026.

Books posting MLB pitcher outs recorded

Measured live, not listed from a spec. Coverage moves — a book that has not put its board up yet will not appear until it does, which is exactly what this list is for.

BetMGMBetUSBovadaCourtsideDabbleDraftKingsFanaticsFanDuelFliffKalshiNovig1xBetParlayPlayPinnaclePolymarket USPrizePicksProphetXSleeperSmarkets

Line shopping across all of them is one request — every book arrives in the same bookmakers array, not one call per book. Add ?bookmakers= to narrow it, or use /best-line for the best price per line already ranked.

Recently settled MLB pitcher outs recorded outcomes

These are real rows out of the API, not an illustration. Each one was a price on a board before the event and carries the actual figure it was graded against afterwards. No other odds API returns that last column — they stop at the price.

2,312 pitcher outs recorded outcomes settled in the last 4 days across 22 books. The 12 most recent:

PlayerBetActualResult
Michael KingOver 14.521.0won
Michael KingUnder 14.521.0lost
Michael King (SD)Over 14.521.0won
Michael King (SD)Under 14.521.0lost
Matthew BoydOver 13.512.0lost
Matthew BoydOver 12.512.0lost
Matt Boyd (CHC)Over 13.512.0lost
Matt BoydOver 13.512.0lost
Matt BoydUnder 13.512.0won
Matthew Boyd (CHI)Over 13.512.0lost
Matthew Boyd (CHI)Under 13.512.0won
Michael King (SDG)Over 14.521.0won

Over/Under split, last 4 days

The Over won 42.3% of 1161 decided pitcher outs recorded lines (491 over, 670 under, 1 push). Computed from the settled rows themselves, scoped to MLB only.

Read off 1,225 Over legs out of 2,312 settled outcomes on this market. The rest are Unders and milestone legs (“1+”, “2+”) that some books price here too, and a threshold rung is not an Over.

A few days of one market describes a few days — it is not an edge. Pull the full history through /exports/resolved-props for a sample worth modelling on.

Live response

Captured from the real endpoint on Philadelphia Phillies @ Atlanta Braves, trimmed to one book and three outcomes so the shape stays readable. The full response carries every book and every line, alternates included, in the same call.

{
  "home_team_key": "braves",
  "away_team_key": "phillies",
  "home_team_id": "mlb:144",
  "away_team_id": "mlb:143",
  "home_team_logo_url": "https://www.mlbstatic.com/team-logos/144.svg",
  "away_team_logo_url": "https://www.mlbstatic.com/team-logos/143.svg",
  "id": "288787",
  "sport_key": "baseball_mlb",
  "home_team": "Atlanta Braves",
  "away_team": "Philadelphia Phillies",
  "commence_time": "2026-09-30T18:00:00Z",
  "live": false,
  "is_outright": false,
  "tournament": null,
  "tour": null,
  "last_update": "2026-09-30T16:05:43.751719Z",
  "merged_from_event_ids": null,
  "bookmakers": [
    {
      "key": "betmgm",
      "title": "BetMGM",
      "last_update": "2026-09-30T16:05:06.311426Z",
      "link": null,
      "app_link": null,
      "pregame_only": false,
      "book_event_id": null,
      "markets": [
        {
          "key": "pitcher_outs",
          "description": "Cristopher Sanchez (PHI): Pitcher outs",
          "last_update": "2026-09-30T16:05:06.311426Z",
          "period": null,
          "suspended_at": null,
          "team": null,
          "outcomes": [
            {
              "name": "Over",
              "description": "Cristopher Sanchez",
              "price": -160,
              "point": 17.5,
              "book_updated_at": null,
              "book_version": null,
              "payout_multiplier": null,
              "dfs_odds_type": null,
              "last_change_at": "2026-09-30T16:04:10.679202Z",
              "last_seen_at": "2026-09-30T16:05:06.311426Z",
              "liquidity": null,
              "liquidity_updated_at": null,
              "line_gap": null,
              "book_outcome_id": null,
              "outcome_id": null,
              "player_id": "mlb:650911",
              "side": null
            },
            {
              "name": "Under",
              "description": "Cristopher Sanchez",
              "price": 120,
              "point": 17.5,
              "book_updated_at": null,
              "book_version": null,
              "payout_multiplier": null,
              "dfs_odds_type": null,
              "last_change_at": "2026-09-30T16:04:10.679202Z",
              "last_seen_at": "2026-09-30T16:05:06.311426Z",
              "liquidity": null,
              "liquidity_updated_at": null,
              "line_gap": null,
              "book_outcome_id": null,
              "outcome_id": null,
              "player_id": "mlb:650911",
              "side": null
            }
          ]
        }
      ]
    }
  ]
}

The response shape is the-odds-api compatible — events, bookmakers, markets, outcomes — so migrating is usually a base URL change.

Try it

1. List MLB events to get an event id:

curl "https://api.prop-line.com/v1/sports/baseball_mlb/events?apiKey=YOUR_API_KEY"

2. Pull pitcher outs recorded for one game across every book — this exact URL works right now:

curl "https://api.prop-line.com/v1/sports/baseball_mlb/events/288787/odds?apiKey=YOUR_API_KEY&markets=pitcher_outs"

3. After the game, get the graded outcomes with the actual stat:

curl "https://api.prop-line.com/v1/sports/baseball_mlb/events/288787/results?apiKey=YOUR_API_KEY"

Steps 1 and 2 run on the free tier. Step 3 — prop resolution — starts on Hobby at $9/mo. See pricing.

Get your free MLB odds API key

1,000 requests / day. No credit card. The same key covers every sport and every market — not just this one.

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