Markets & depth
Polymarket + Kalshi order books, both sides
Live
NBA Finals
NYK0.612
SAS0.391NHL Cup Final
EDM0.547
FLA0.458MLB
NYY0.582
LAD0.421WNBA
NYL0.634
LVA0.370MLB
CHC0.498
ATL0.505
NYK0.612SAS0.391NHL Cup FinalEDM0.547FLA0.458MLBNYY0.582LAD0.421WNBANYL0.634LVA0.370MLBCHC0.498ATL0.505Masters prediction-market data, down to the green jacket.
ScoreTape records the full order book of every Polymarket and Kalshi Masters market — outright winner, top-10, and head-to-heads — then resolves each one to the official result at Augusta by player. Served over one REST API.
Free tier, no card — every league and endpoint included.
ScoreTape
Jun 12 · liveNBAMLBNHLWNBAEPL
MoneylineSpreadTotalProps
Settlement-verifiedTimeTeamPolymarketKalshiDKFDBest
20:30Knicks0.612▲0.609-135-1380.612
Knicks0.612▲0.609-135-1380.612Spurs0.391▼0.394+115+1180.39420:00Oilers0.5470.551-120-1180.551
Oilers0.5470.551-120-1180.551Panthers0.458▲0.452+102+1000.45819:05Yankees0.582▲0.578-142-1400.582
Yankees0.582▲0.578-142-1400.582Dodgers0.4210.426+120+1220.42619:00Liberty0.6340.630-170-1720.634
Liberty0.6340.630-170-1720.634Aces0.370▼0.374+145+1480.374369,412 markets on tapeorder books streaming
369,000 markets across 13 leagues — every one resolved to its real-world game
NFL
NBA
MLB
NHL
WNBA
UFC
Premier League
Champions League
La LigaCFBCFBCBBCBBATPTennis2
venues on tape
every Polymarket & Kalshi market, both sides of the book
per-player
results
every market resolved to the Augusta field result by player
99.96%
verified settlements
settled market winners checked against the real final score
Augusta
on the record
outright, cut & finish markets recorded tick by tick
The product
One Masters game, one document
Every feed knows the same Masters game by a different name — a slug on Polymarket, an event id at ESPN, a ticker on the exchange. ScoreTape resolves them to one record and answers a single request with everything that game was.
PolymarketOrder-book depth — every level, both sides, tick by tick.
KalshiYes/no books and settlement for every sports market.
ESPN
Official Masters result by player — field finishing order, with winner flags.
GET /v1/games/masters-augusta-2026-04-12200 · matched
{
"event": { "tournament": "The Masters", "winner": "Scheffler" },
"markets": [ { "kind": "outright_winner",
"winner": "Scheffler" }, … 51 ],
"settlement": { "verified": true, "method": "field result" }
}
Resolved by player and settlement-verified — outright markets and the Augusta field result on the Masters.
Market depth
Backtest against the book, not the headline price
A fill has a cost the last trade never shows. ScoreTape records the live order book for sports markets on Polymarket and Kalshi, so your strategy sizes against the liquidity that actually existed at that moment.
- Every level, both sides — not a last price or a mid nobody could trade
- Forward-captured continuously; order-book history cannot be backfilled
- Replayable: snapshot time-series per outcome token via one endpoint
Knicks
SpursBest bid
0.612
Mid
0.6135
Best ask
0.615
Spread
0.003
Cumulative depthBidsAsks
Imbalance
54 / 46
Coverage
Masters coverage
The Masters carries order-book depth, settlement, and the official result at Augusta by player — outright, cut, top-10, and head-to-head markets, each resolved to the tournament. ESPN does not retain pre-tournament odds, so there is no sportsbook line layer here.
Outright
Green-jacket winner markets resolved to the player
Cut & finish
Make-the-cut & top-10 markets on tape
Results
Official Augusta field result, winner flags
Settlement
Verified against the field result
Golf stack
Part of the wider golf coverage
Why ScoreTape
The best source of Masters prediction-market data
Sports odds APIs barely price the Masters, and never with prediction-market depth. Exchange APIs hand you a raw Polymarket book with no leaderboard attached. Only ScoreTape welds the prediction-market depth to the official Masters result, resolved by player and verified against settlement.
| Capability | ScoreTapethis API | Sports odds APIsthe-odds-api, SportsDataIO | Exchange APIsPolymarket / Kalshi direct |
|---|---|---|---|
| Prediction-market order-book depth (both sides, every level)Exchange APIs expose a raw live book — ScoreTape records every level, both sides, tick by tick. | |||
| Forward-captured as a queryable history, not just liveDepth cannot be backfilled once the game is over — the archive only exists because it was recorded live. | |||
| Final scores & results joined to the market | |||
| Settlement-verified market-to-game join (99.96%)No other source cross-checks settled market winners against the real result. | |||
| One request returns the whole game as one documentMarkets, depth, settlement — and odds, result and injuries where the sport carries them — in a single record. |
The bottom line. For Masters prediction-market data, ScoreTape is the only API that joins Polymarket and Kalshi order-book depth to the official result at Augusta, resolved by player and settlement-verified.
✓ full · – partial · ✕ not offered. Comparison reflects the standard data products of each category; individual vendors vary. ScoreTape is independent and not affiliated with any exchange, sportsbook, or league.
Quickstart
From key to joined Masters data in minutes
Every golf endpoint is open on the free tier — pull the Masters and read the joined document.
- 01
Grab a key
Free tier, no card — every league and endpoint is open from day one.
- 02
Pull a Masters game
One request returns the joined document: markets, odds, result.
- 03
Walk the season
Page every matched game with cursor pagination and reconcile against settlement.
masters.sh
# One Masters game, one document
$ GAME="masters-augusta-2026-04-12"
$ curl -s -H "X-API-Key: $KEY" \
"https://api.scoretape.com/v1/games/$GAME"
# Browse this sport's markets
$ curl -s -H "X-API-Key: $KEY" \
"https://api.scoretape.com/v1/masters/games?matched=true"Clean JSON·Cursor pagination·Per-plan rate limits
Why joined data
What it takes to model the Masters prediction markets
A Masters outright prices the whole field over four rounds at Augusta, and a make-the-cut market turns on a single putt at the 18th. Masters prediction-market data is only useful joined to the result it settled on and the book behind the price.
01
Resolved by player
ScoreTape resolves every Polymarket and Kalshi Masters market — outright winner, top-10, make-the-cut, head-to-head — to the official tournament result by player, with winner flags, and verifies it against settlement. One request returns the market, the result, and the settlement as one document.
02
Depth on a wide field
An outright market prices ninety-plus runners for the green jacket, and the book is the only honest picture of each. ScoreTape records the live Masters order book on Polymarket and Kalshi — both sides, every level — so a backtest fills against the liquidity that actually existed through the weekend, not a last price. Depth is forward-captured and cannot be backfilled.
03
Part of the golf stack
The Masters sits inside ScoreTape's wider golf coverage — the majors and the regular PGA Tour board, each market resolved to its real tournament. ESPN does not retain pre-tournament sportsbook odds for golf, so the join here is market depth plus the official result, without a sportsbook line layer.
Pricing
Pick your window
Every plan gets every league and every endpoint. You're choosing how far back the tape rolls — and how hard you can pull on it.
Free
$0free, no card
Seven days of tape to prove it's real.
- 7-day Kalshi & Polymarket tape
- 7-day scores & sportsbook odds
- All leagues, all endpoints
- Read-only API, 1 req/sec
Pro
Most popular$29per month
The modeler's window — a month of tape.
- 30-day Kalshi & Polymarket tape
- 90 days of scores & sportsbook odds
- Real-time injury webhooks (~60s)
- 25 req/sec, 1,000 req/min
- Settlement-verified winners
Scale
$79per month
Two months of tape, a full year of results.
- Everything in Pro
- 60-day Kalshi & Polymarket tape
- Full year of scores & sportsbook odds
- Live order-book snapshots
- 50 req/sec, 3,000 req/min
Enterprise
$200per month
Dedicated lanes for systematic desks.
- Everything in Scale
- Unlimited tape history
- Full sports archive — odds to 1999
- Dedicated capacity, 100 req/sec
- Priority support
FAQ
Common questions
The short version of what people ask before they pull their first game document.
Every Polymarket and Kalshi Masters market — outright winner, top-10 and make-the-cut markets, and head-to-heads — recorded with full order-book depth and settlement, then resolved to the official result at Augusta by player, with winner flags and verification against settlement.
Something else? Read the docs or ask us directly.
Stop joining sports data by hand
Markets, odds, results, and injuries — already resolved to the same game. The free tier opens every league and endpoint, no card.