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 FinalEDM0.547FLA0.458MLBNYY0.582LAD0.421WNBANYL0.634LVA0.370MLBCHC0.498ATL0.505Every tennis market, match to settlement.
ScoreTape records the full order book of every Polymarket and Kalshi tennis market — match winners across the ATP and WTA tours — then joins each one to the real match result by competitor. 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-match
settlement
every market resolved to the match result by competitor
99.96%
verified settlements
settled market winners checked against the real final score
ATP+WTA
tours
men's and women's match markets on tape
The product
One Tennis game, one document
Every feed knows the same Tennis 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
Final scores, box scores, play-by-play — plus odds from up to 15 sportsbooks.
GET /v1/games/tennis-alcaraz-sinner-2026-06-07200 · matched
{
"competitors": [ { "name": "Alcaraz", "winner": true },
{ "name": "Sinner", "winner": false } ],
"markets": [ { "kind": "match_winner",
"winner": "Alcaraz" }, … 6 ],
"settlement": { "verified": true, "method": "surnames" }
}
Resolved by competitor and settlement-verified — match markets and the result on one tennis match.
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
Tennis coverage — ATP & WTA
Tennis carries order-book depth, settlement, and per-match results across the ATP and WTA tours — resolved by competitor. ESPN does not retain pre-match tennis odds, so there is no sportsbook line layer here.
ATP tour
Men's match markets resolved to competitors
WTA tour
Women's match markets resolved to competitors
Results
Per-match winner, settlement-verified
Grand Slams
The majors recorded tick by tick
Settlement
Verified against the match result
Why ScoreTape
The best source of Tennis prediction-market data
Sports odds APIs barely cover tennis, and never with prediction-market depth. Exchange APIs hand you a raw Polymarket book with no match attached. Only ScoreTape welds the prediction-market depth to the real match result, resolved by competitor across the ATP and WTA tours.
| 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 book, but unjoined and not archived as forward-captured history. | |||
| Sportsbook odds in the same recordOdds APIs serve lines only — no prediction-market book beside them. | |||
| 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. | |||
| Real-time injury webhooks (~60s, signed) | |||
| Player props resolved to real athletes | |||
| Historical odds archive (back to 1999 / 2000-01) | |||
| One request returns the whole gameMarkets, odds, result, and injuries arrive as a single joined document. |
The bottom line. For tennis prediction-market data, ScoreTape is the only API that joins Polymarket and Kalshi order-book depth to per-match results across the ATP and WTA tours, resolved by competitor 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 Tennis data in minutes
Every tennis endpoint is open on the free tier — pull a match 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 Tennis 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.
tennis.sh
# One Tennis game, one document
$ GAME="tennis-alcaraz-sinner-2026-06-07"
$ 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/tennis/games?matched=true"Clean JSON·Cursor pagination·Per-plan rate limits
Why joined data
What it takes to model the tennis prediction markets
Tennis is a pure two-outcome market that swings fast on a withdrawal or a momentum shift. Tennis prediction-market data is only useful joined to the match it settled on and the book behind the price.
01
Resolved by competitor
Tennis has no team id — matches are matched by competitor names. ScoreTape resolves every Polymarket and Kalshi tennis market to its real match (per-athlete winner flags) and verifies the result against settlement, so a market reconciles against the match that actually happened.
02
Depth on a binary market
In a clean two-outcome market, the book is the whole story. ScoreTape records the live tennis order book on Polymarket and Kalshi — both sides, every level, tick by tick — so a backtest fills against real liquidity through a swinging match, not a last price. Depth is forward-captured and cannot be backfilled.
03
Across both tours
ScoreTape carries ATP and WTA match markets — Grand Slams through the 1000-level events — each resolved to its competitors. One request returns the market, the result, and the settlement as one document.
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
Prediction-market data for every sport
Read the API docsFAQ
Common questions
The short version of what people ask before they pull their first game document.
Every Polymarket and Kalshi tennis market — match winners across the ATP and WTA tours — recorded with full order-book depth and settlement, resolved to the real match by competitor names with per-athlete winner flags.
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.