Will Russell Westbrook announce his retirement before the 2028-29 NBA season
Liquidity-weighted aggregate sits at 34% across 20 Kalshi contracts.
Implied probability
Kalshi
34%
20 contracts
Polymarket
—
not bound
Cross-venue gap
—
single venue
24h move
—
no pin
24h volume
$68
20 contracts
Closes
Nov 15, 2030
1601 days
30-day trend
Bracket families
6 clusters across 20 contracts.
These contracts were grouped by title similarity. The headline aggregate combines all clusters; verify the cluster you actually need before quoting a number.
Cluster 1
Will Draymond Green announce his retirement before the 202
Will Draymond Green announce his retirement before the 2026-27 NBA season?: Before the 2026-27 season
KXNBARETIRE-DGREEN23-2627
Will Draymond Green announce his retirement before the 2029-30 NBA season?: Before the 2029-30 season
KXNBARETIRE-DGREEN23-2930
Will Draymond Green announce his retirement before the 2028-29 NBA season?: Before the 2028-29 season
KXNBARETIRE-DGREEN23-2829
Will Draymond Green announce his retirement before the 2027-28 NBA season?: Before the 2027-28 season
KXNBARETIRE-DGREEN23-2728
Cluster 2
Will Kyrie Irving announce his retirement before the 20
Will Kyrie Irving announce his retirement before the 2027-28 NBA season?: Before the 2027-28 season
KXNBARETIRE-KIRVING11-2728
Will Kyrie Irving announce his retirement before the 2030-31 NBA season?: Before the 2030-31 season
KXNBARETIRE-KIRVING11-3031
Will Kyrie Irving announce his retirement before the 2029-30 NBA season?: Before the 2029-30 season
KXNBARETIRE-KIRVING11-2930
Will Kyrie Irving announce his retirement before the 2028-29 NBA season?: Before the 2028-29 season
KXNBARETIRE-KIRVING11-2829
Cluster 3
Will Kawhi Leonard announce his retirement before the 20
Will Kawhi Leonard announce his retirement before the 2027-28 NBA season?: Before the 2027-28 season
KXNBARETIRE-KLEONARD2-2728
Will Kawhi Leonard announce his retirement before the 2030-31 NBA season?: Before the 2030-31 season
KXNBARETIRE-KLEONARD2-3031
Will Kawhi Leonard announce his retirement before the 2029-30 NBA season?: Before the 2029-30 season
KXNBARETIRE-KLEONARD2-2930
Will Kawhi Leonard announce his retirement before the 2028-29 NBA season?: Before the 2028-29 season
KXNBARETIRE-KLEONARD2-2829
Cluster 4
Will LeBron James announce his retirement before the 202
Will LeBron James announce his retirement before the 2027-28 NBA season?: Before the 2027-28 season
KXNBARETIRE-LJAMES23-2728
Will LeBron James announce his retirement before the 2029-30 NBA season?: Before the 2029-30 season
KXNBARETIRE-LJAMES23-2930
Will LeBron James announce his retirement before the 2028-29 NBA season?: Before the 2028-29 season
KXNBARETIRE-LJAMES23-2829
Cluster 5
Will Kevin Durant announce his retirement before the 202
Will Kevin Durant announce his retirement before the 2027-28 NBA season?: Before the 2027-28 season
KXNBARETIRE-KDURANT7-2728
Will Kevin Durant announce his retirement before the 2029-30 NBA season?: Before the 2029-30 season
KXNBARETIRE-KDURANT7-2930
Will Kevin Durant announce his retirement before the 2028-29 NBA season?: Before the 2028-29 season
KXNBARETIRE-KDURANT7-2829
Cluster 6
Will Russell Westbrook announce his retirement before the 202
Will Russell Westbrook announce his retirement before the 2026-27 NBA season?: Before the 2026-27 season
KXNBARETIRE-RWESTBROOK18-2627
Will Russell Westbrook announce his retirement before the 2027-28 NBA season?: Before the 2027-28 season
KXNBARETIRE-RWESTBROOK18-2728
Analysis
This market estimates a 43% chance that Russell Westbrook will announce his retirement before the 2028-29 NBA season begins, roughly two years from now. Westbrook is currently 37 years old and in the later stages of a 16-year NBA career, making his retirement timeline increasingly relevant for team planning. The probability reflects uncertainty about his health, performance level, and personal decisions in the coming seasons. Key drivers include whether he maintains regular playing time and statistical production, his current team's championship trajectory, and any injury setbacks. The resolution depends on an official retirement announcement; contract expirations and free agency decisions in summer 2027 and 2028 will provide concrete signals about his intentions.
- ›Westbrook's age (37 in May 2026) and historical career length compared to peer athletes at similar tenure
- ›Playing time and on-court performance metrics over the 2026-27 and 2027-28 seasons
- ›Contract status and free agency windows in 2027 and 2028, which create natural decision points
- ›Comparison markets show lower retirement probability for younger stars like Durant (24%) over the same timeframe
- ›Recent teammate retirements in the NBA and typical retirement announcement timing relative to offseason periods
What moved the line
- Jun 27Before the 2028-29 season↑7pp12→19¢ · Kalshi
- Jun 25Before the 2027-28 season↓5pp63→58¢ · Kalshi
- Jun 23Before the 2029-30 season↓4pp89→85¢ · Kalshi
- Jun 24Before the 2028-29 season↓3pp83→80¢ · Kalshi
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These markets stopped trading. Last odds and any captured outcome are shown above — full settlement detail lives at the venue.
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How we compute these odds
SimpleFunctions aggregates live prediction-market contracts from Kalshi and Polymarket. Each slug groups contracts that resolve on the same underlying event, identified by venue event_id.
For binary slugs, the headline probability is the liquidity-weighted mid-price across all bound contracts. For multi-outcome slugs (e.g. elections with 3+ candidates), the headline is the leader’s price; we never arithmetically average disjoint outcomes — that would produce a number with no real-world meaning.
Snapshots refresh every 5 minutes during market hours; daily aggregates are computed at 04:00 UTC. The 30-day sparkline is drawn from per-ticker daily means stored in market_indicator_daily; 24h delta and movement events are derived from the same source.
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