Odds API by market / MLB
MLB Pitcher Strikeouts API
The pitcher_strikeouts board is not posted right now. This page keeps the last measured window — 1,357 settled outcomes — and reactivates on its own the first build after books post the market again. The endpoint, the response shape and the free tier work today.
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What MLB pitcher strikeouts is
Strikeouts recorded by a starting pitcher. The deepest baseball prop market, and the one with the widest alternate ladder — books post both a half-point Over/Under and a full set of N+ rungs.
How we settle it. Graded against the pitching stat group. Deliberately distinct from batter strikeouts, which reads the batting group — one key for each so a strikeout prop can never grade against the wrong side of the plate.
Every number on this page is measured against the live API, never copied from a spec sheet. Last measured 27 October 2026.
Books that last posted MLB pitcher strikeouts
Measured on the last slate that carried it, 27 October 2026. When books post it again, this list rebuilds from whichever ones actually do.
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 strikeouts 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.
1,357 pitcher strikeouts outcomes settled in the last 4-day window it was posted across 27 books. The 12 most recent:
| Player | Bet | Actual | Result |
|---|---|---|---|
| Freddy Peralta | 3+ Strikeouts | 4.0 | won |
| Freddy Peralta | 4+ Strikeouts | 4.0 | won |
| Robert Gasser | 2+ Strikeouts | 3.0 | won |
| Robert Gasser | Over 3.5 | 3.0 | lost |
| Freddy Peralta (TB) | Over 4.5 | 4.0 | lost |
| Freddy Peralta (TB) | Under 4.5 | 4.0 | won |
| Robert Gasser (MIL) | Over 3.5 | 3.0 | lost |
| Nick Martinez | 5+ Strikeouts | 5.0 | won |
| Nick Martinez | 6+ Strikeouts | 5.0 | lost |
| Jacob Misiorowski | Over 11.5 | 3.0 | lost |
| Jacob Misiorowski | Over 6.5 | 3.0 | lost |
| Jacob Misiorowski (MIL) | Over 6.5 | 3.0 | lost |
Over/Under split, last posted window
The Over won 26.7% of 419 decided pitcher strikeouts lines (112 over, 307 under). Computed from the settled rows themselves, scoped to MLB only.
Read off 476 Over legs out of 1,357 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 Milwaukee Brewers @ Tampa Bay Rays while it was posted, 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": "rays",
"away_team_key": "brewers",
"home_team_id": "mlb:139",
"away_team_id": "mlb:158",
"home_team_logo_url": "https://img.mlbstatic.com/mlb-photos/image/upload/w_500,f_png,q_auto/v1/team/139/logo/spot/current",
"away_team_logo_url": "https://img.mlbstatic.com/mlb-photos/image/upload/w_500,f_png,q_auto/v1/team/158/logo/spot/current",
"id": "539799",
"sport_key": "baseball_mlb",
"home_team": "Tampa Bay Rays",
"away_team": "Milwaukee Brewers",
"commence_time": "2026-10-28T00:00:00Z",
"live": false,
"is_outright": false,
"tournament": null,
"tour": null,
"last_update": "2026-10-27T15:29:02.270209Z",
"merged_from_event_ids": null,
"bookmakers": [
{
"key": "betmgm",
"title": "BetMGM",
"last_update": "2026-10-27T15:27:58.295240Z",
"link": null,
"app_link": null,
"pregame_only": false,
"book_event_id": null,
"markets": [
{
"key": "pitcher_strikeouts",
"description": "Griffin Jax: Strikeouts",
"last_update": "2026-10-27T15:27:58.295240Z",
"period": null,
"suspended_at": null,
"team": null,
"line_type": "main",
"outcomes": [
{
"name": "Over",
"description": "Griffin Jax",
"price": -125,
"point": 3.5,
"book_updated_at": null,
"book_version": null,
"payout_multiplier": null,
"dfs_odds_type": null,
"last_change_at": "2026-10-27T14:11:14.042322Z",
"last_seen_at": "2026-10-27T15:27:58.295240Z",
"liquidity": null,
"liquidity_updated_at": null,
"line_gap": null,
"book_outcome_id": null,
"outcome_id": null,
"player_id": "mlb:643377",
"side": null
},
{
"name": "Under",
"description": "Griffin Jax",
"price": -105,
"point": 3.5,
"book_updated_at": null,
"book_version": null,
"payout_multiplier": null,
"dfs_odds_type": null,
"last_change_at": "2026-10-27T14:11:14.042322Z",
"last_seen_at": "2026-10-27T15:27:58.295240Z",
"liquidity": null,
"liquidity_updated_at": null,
"line_gap": null,
"book_outcome_id": null,
"outcome_id": null,
"player_id": "mlb:643377",
"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 strikeouts for one game across every book — swap in a live event id from step 1 once books post it again:
curl "https://api.prop-line.com/v1/sports/baseball_mlb/events/539799/odds?apiKey=YOUR_API_KEY&markets=pitcher_strikeouts"3. After the game, get the graded outcomes with the actual stat:
curl "https://api.prop-line.com/v1/sports/baseball_mlb/events/539799/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.
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