Market comparison

Pro Basketball Rookie of the Year Winner

2 venues · 55 outcome rows · 16 comparable lines · event identity linked · 0 verified parity · active

Polymarket

Open venue ↗

81 outcomes · $8.0M reported volume

Observed 1m ago

Recorded venue end date: May 1, 2027

Kalshi

Open venue ↗

17 outcomes · $1.4M reported volume

Observed 48s ago

Recorded venue end date: Jul 8, 2027

Check settlement rules before comparing contracts. Matched outcomes may settle differently. These venues also report end dates more than 48 hours apart; event identity does not mean the contracts close or settle together. These are stored prices; record update times do not certify live quotes. Differences exclude fees and available size.

Known rule differences between venues

Both settle on the official league/organizer result for the named season; Kalshi's season is the ticker edition (KXNBA-27 = 2026-27) and Polymarket's is stated in the title or slug.
Season cancelled or not completed: Kalshi resolves per its rules (typically a fair price); Polymarket resolves to 'Other' or 50-50 depending on the event.
Polymarket lists placeholders ('Other', 'Team A') and closes eliminated outcomes early; only live named outcomes are linked.
Awards: Kalshi and Polymarket both settle on the official award announcement; ties or shared awards are handled differently (Kalshi per contract rules, Polymarket split).

A shared identity alone does not make a price difference executable.

Available outcome prices by venue for Pro Basketball Rookie of the Year Winner
Outcome	Polymarket	Kalshi	Difference
Aday Mara Partial parity Payoffs match in ordinary outcomes; see the rule differences above.	1.2% Bid 0.8% · Ask 1.6% Aday Mara Open Polymarket ↗	2.0% Bid 0.0% · Ask 2.0% Aday Mara Open Kalshi ↗	0.8 pp
AJ Dybantsa Partial parity Payoffs match in ordinary outcomes; see the rule differences above.	17.0% Bid 16.0% · Ask 18.0% AJ Dybantsa Open Polymarket ↗	14.0% Bid 14.0% · Ask 15.0% AJ Dybantsa Open Kalshi ↗	3.0 pp
Bennett Stirtz Partial parity Payoffs match in ordinary outcomes; see the rule differences above.	0.8% Bid 0.3% · Ask 1.3% Bennett Stirtz Open Polymarket ↗	1.0% Bid 0.0% · Ask 1.0% Bennett Stirtz Open Kalshi ↗	0.2 pp
Brayden Burries Partial parity Payoffs match in ordinary outcomes; see the rule differences above.	0.7% Bid 0.3% · Ask 1.0% Brayden Burries Open Polymarket ↗	1.0% Bid 1.0% · Ask 2.0% Brayden Burries Open Kalshi ↗	0.4 pp
Caleb Wilson Partial parity Payoffs match in ordinary outcomes; see the rule differences above.	20.5% Bid 19.0% · Ask 22.0% Caleb Wilson Open Polymarket ↗	20.0% Bid 20.0% · Ask 22.0% Caleb Wilson Open Kalshi ↗	0.5 pp
Cameron Boozer Partial parity Payoffs match in ordinary outcomes; see the rule differences above.	27.5% Bid 27.0% · Ask 28.0% Cameron Boozer Open Polymarket ↗	26.0% Bid 26.0% · Ask 27.0% Cameron Boozer Open Kalshi ↗	1.5 pp
Dailyn Swain Partial parity Payoffs match in ordinary outcomes; see the rule differences above.	0.1% Bid 0.1% · Ask 0.2% Dailyn Swain Open Polymarket ↗	1.0% Bid 0.0% · Ask 1.0% Dailyn Swain Open Kalshi ↗	0.9 pp
Darius Acuff Jr. Partial parity Payoffs match in ordinary outcomes; see the rule differences above.	8.5% Bid 8.0% · Ask 9.0% Darius Acuff Jr. Open Polymarket ↗	8.0% Bid 8.0% · Ask 9.0% Darius Acuff Jr. Open Kalshi ↗	0.5 pp
Darryn Peterson Partial parity Payoffs match in ordinary outcomes; see the rule differences above.	15.5% Bid 14.0% · Ask 17.0% Darryn Peterson Open Polymarket ↗	13.0% Bid 13.0% · Ask 15.0% Darryn Peterson Open Kalshi ↗	2.5 pp
Hannes Steinbach Partial parity Payoffs match in ordinary outcomes; see the rule differences above.	0.1% Bid 0.1% · Ask 0.2% Hannes Steinbach Open Polymarket ↗	1.0% Bid 0.0% · Ask 1.0% Hannes Steinbach Open Kalshi ↗	0.9 pp
Keaton Wagler Partial parity Payoffs match in ordinary outcomes; see the rule differences above.	2.0% Bid 0.3% · Ask 3.7% Keaton Wagler Open Polymarket ↗	2.0% Bid 2.0% · Ask 3.0% Keaton Wagler Open Kalshi ↗	0.0 pp
Kingston Flemings Partial parity Payoffs match in ordinary outcomes; see the rule differences above.	0.4% Bid 0.2% · Ask 0.5% Kingston Flemings Open Polymarket ↗	1.0% Bid 0.0% · Ask 1.0% Kingston Flemings Open Kalshi ↗	0.7 pp
Mikel Brown Jr. Partial parity Payoffs match in ordinary outcomes; see the rule differences above.	2.1% Bid 0.5% · Ask 3.8% Mikel Brown Jr. Open Polymarket ↗	2.0% Bid 2.0% · Ask 3.0% Mikel Brown Jr. Open Kalshi ↗	0.1 pp
Morez Johnson Jr. Partial parity Payoffs match in ordinary outcomes; see the rule differences above.	0.2% Bid 0.1% · Ask 0.3% Morez Johnson Jr. Open Polymarket ↗	1.0% Bid 0.0% · Ask 1.0% Morez Johnson Jr. Open Kalshi ↗	0.8 pp
Nate Ament Partial parity Payoffs match in ordinary outcomes; see the rule differences above.	0.3% Bid 0.1% · Ask 0.4% Nate Ament Open Polymarket ↗	1.0% Bid 0.0% · Ask 1.0% Nate Ament Open Kalshi ↗	0.8 pp
Yaxel Lendeborg Partial parity Payoffs match in ordinary outcomes; see the rule differences above.	9.8% Bid 7.9% · Ask 11.6% Yaxel Lendeborg Open Polymarket ↗	20.0% Bid 17.0% · Ask 20.0% Yaxel Lendeborg Open Kalshi ↗	10.3 pp
Alex Karaban Not aligned No persisted outcome identity connects these venue contracts.	0.2% Bid 0.1% · Ask 0.3% Alex Karaban Open Polymarket ↗	—	—
Allen Graves Not aligned No persisted outcome identity connects these venue contracts.	0.5% Bid 0.3% · Ask 0.7% Allen Graves Open Polymarket ↗	—	—
Cameron Carr Not aligned No persisted outcome identity connects these venue contracts.	0.9% Bid 0.1% · Ask 1.8% Cameron Carr Open Polymarket ↗	—	—
Chris Cenac Jr. Not aligned No persisted outcome identity connects these venue contracts.	0.3% Bid 0.2% · Ask 0.3% Chris Cenac Jr. Open Polymarket ↗	—	—
Christian Anderson Not aligned No persisted outcome identity connects these venue contracts.	0.1% Bid 0.1% · Ask 0.2% Christian Anderson Open Polymarket ↗	—	—
Ebuka Okorie Not aligned No persisted outcome identity connects these venue contracts.	0.8% Bid 0.3% · Ask 1.2% Ebuka Okorie Open Polymarket ↗	—	—
Jayden Quaintance Not aligned No persisted outcome identity connects these venue contracts.	0.1% Bid 0.1% · Ask 0.2% Jayden Quaintance Open Polymarket ↗	—	—
Joshua Jefferson Not aligned No persisted outcome identity connects these venue contracts.	0.1% Bid 0.1% · Ask 0.2% Joshua Jefferson Open Polymarket ↗	—	—
Karim López Not aligned No persisted outcome identity connects these venue contracts.	0.1% Bid 0.1% · Ask 0.2% Karim López Open Polymarket ↗	—	—
Koa Peat Not aligned No persisted outcome identity connects these venue contracts.	0.1% Bid 0.1% · Ask 0.2% Koa Peat Open Polymarket ↗	—	—
Labaron Philon Jr. Not aligned No persisted outcome identity connects these venue contracts.	1.3% Bid 0.2% · Ask 2.4% Labaron Philon Jr. Open Polymarket ↗	—	—
Player A Not aligned No persisted outcome identity connects these venue contracts.	50.0% Bid 0.0% · Ask 100.0% Player AN · closed Open Polymarket ↗	—	—
Player AA Not aligned No persisted outcome identity connects these venue contracts.	50.0% Bid 0.0% · Ask 100.0% Player AA · closed Open Polymarket ↗	—	—
Player AB Not aligned No persisted outcome identity connects these venue contracts.	50.0% Bid 0.0% · Ask 100.0% Player AB · closed Open Polymarket ↗	—	—
Player AC Not aligned No persisted outcome identity connects these venue contracts.	50.0% Bid 0.0% · Ask 100.0% Player AC · closed Open Polymarket ↗	—	—
Player AD Not aligned No persisted outcome identity connects these venue contracts.	50.0% Bid 0.0% · Ask 100.0% Player AD · closed Open Polymarket ↗	—	—
Player AE Not aligned No persisted outcome identity connects these venue contracts.	50.0% Bid 0.0% · Ask 100.0% Player AE · closed Open Polymarket ↗	—	—
Player AF Not aligned No persisted outcome identity connects these venue contracts.	50.0% Bid 0.0% · Ask 100.0% Player AF · closed Open Polymarket ↗	—	—
Player AG Not aligned No persisted outcome identity connects these venue contracts.	50.0% Bid 0.0% · Ask 100.0% Player AG · closed Open Polymarket ↗	—	—
Player AH Not aligned No persisted outcome identity connects these venue contracts.	50.0% Bid 0.0% · Ask 100.0% Player AH · closed Open Polymarket ↗	—	—
Player AI Not aligned No persisted outcome identity connects these venue contracts.	50.0% Bid 0.0% · Ask 100.0% Player AI · closed Open Polymarket ↗	—	—
Player AJ Not aligned No persisted outcome identity connects these venue contracts.	50.0% Bid 0.0% · Ask 100.0% Player AJ · closed Open Polymarket ↗	—	—
Player AK Not aligned No persisted outcome identity connects these venue contracts.	50.0% Bid 0.0% · Ask 100.0% Player AK · closed Open Polymarket ↗	—	—
Player AL Not aligned No persisted outcome identity connects these venue contracts.	50.0% Bid 0.0% · Ask 100.0% Player AL · closed Open Polymarket ↗	—	—
Player AM Not aligned No persisted outcome identity connects these venue contracts.	50.0% Bid 0.0% · Ask 100.0% Player AM · closed Open Polymarket ↗	—	—
Player AO Not aligned No persisted outcome identity connects these venue contracts.	50.0% Bid 0.0% · Ask 100.0% Player AO · closed Open Polymarket ↗	—	—
Player AP Not aligned No persisted outcome identity connects these venue contracts.	50.0% Bid 0.0% · Ask 100.0% Player AP · closed Open Polymarket ↗	—	—
Player AQ Not aligned No persisted outcome identity connects these venue contracts.	50.0% Bid 0.0% · Ask 100.0% Player AQ · closed Open Polymarket ↗	—	—
Player AR Not aligned No persisted outcome identity connects these venue contracts.	50.0% Bid 0.0% · Ask 100.0% Player AR · closed Open Polymarket ↗	—	—
Player AS Not aligned No persisted outcome identity connects these venue contracts.	50.0% Bid 0.0% · Ask 100.0% Player AS · closed Open Polymarket ↗	—	—
Player AT Not aligned No persisted outcome identity connects these venue contracts.	50.0% Bid 0.0% · Ask 100.0% Player AT · closed Open Polymarket ↗	—	—
Player AU Not aligned No persisted outcome identity connects these venue contracts.	50.0% Bid 0.0% · Ask 100.0% Player AU · closed Open Polymarket ↗	—	—
Player AV Not aligned No persisted outcome identity connects these venue contracts.	50.0% Bid 0.0% · Ask 100.0% Player AV · closed Open Polymarket ↗	—	—
Player AW Not aligned No persisted outcome identity connects these venue contracts.	50.0% Bid 0.0% · Ask 100.0% Player AW · closed Open Polymarket ↗	—	—
Player AX Not aligned No persisted outcome identity connects these venue contracts.	50.0% Bid 0.0% · Ask 100.0% Player AX · closed Open Polymarket ↗	—	—
Sergio De Larrea Not aligned No persisted outcome identity connects these venue contracts.	0.9% Bid 0.1% · Ask 1.8% Sergio De Larrea Open Polymarket ↗	—	—
Tarris Reed Jr. Not aligned No persisted outcome identity connects these venue contracts.	0.1% Bid 0.1% · Ask 0.2% Tarris Reed Jr. Open Polymarket ↗	—	—
Tie/Co-Winners Not aligned No persisted outcome identity connects these venue contracts.	—	1.0% Bid 0.0% · Ask 1.0% Tie/Co-Winners Open Kalshi ↗	—
Zuby Ejiofor Not aligned No persisted outcome identity connects these venue contracts.	0.3% Bid 0.2% · Ask 0.3% Zuby Ejiofor Open Polymarket ↗	—	—

Aday Mara

Partial parity

Payoffs match in ordinary outcomes; see the rule differences above.

Polymarket

1.2%

Bid 0.8% · Ask 1.6%

Aday Mara

Pro Basketball Rookie of the Year Winner

Polymarket

Kalshi

Known rule differences between venues

Aday Mara

Polymarket

Kalshi

AJ Dybantsa

Polymarket

Kalshi

Bennett Stirtz

Polymarket

Kalshi

Brayden Burries

Polymarket

Kalshi

Caleb Wilson

Polymarket

Kalshi

Cameron Boozer

Polymarket

Kalshi

Dailyn Swain

Polymarket

Kalshi

Darius Acuff Jr.

Polymarket

Kalshi

Darryn Peterson

Polymarket

Kalshi

Hannes Steinbach

Polymarket

Kalshi

Keaton Wagler

Polymarket

Kalshi

Kingston Flemings

Polymarket

Kalshi

Mikel Brown Jr.

Polymarket

Kalshi

Morez Johnson Jr.

Polymarket

Kalshi

Nate Ament

Polymarket

Kalshi

Yaxel Lendeborg

Polymarket

Kalshi

Alex Karaban

Polymarket

Kalshi

Allen Graves

Polymarket

Kalshi

Cameron Carr

Polymarket

Kalshi

Chris Cenac Jr.

Polymarket

Kalshi

Christian Anderson

Polymarket

Kalshi

Ebuka Okorie

Polymarket

Kalshi

Jayden Quaintance

Polymarket

Kalshi

Joshua Jefferson

Polymarket

Kalshi

Karim López

Polymarket

Kalshi

Koa Peat