Will Russell Westbrook announce his retirement before the 2028-29 NBA season
Liquidity-weighted aggregate sits at 32% across 17 Kalshi contracts.
Implied probability
Kalshi
32%
17 contracts
Polymarket
—
not bound
Cross-venue gap
—
single venue
24h move
—
no pin
24h volume
$365
17 contracts
Closes
Nov 15, 2030
1513 days
30-day trend
Bracket families
5 clusters across 17 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 Kyrie Irving announce his retirement before the 20
Will Kyrie Irving announce his retirement before the 2026-27 NBA season?: Before the 2026-27 season
KXNBARETIRE-KIRVING11-2627
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
Will Kyrie Irving announce his retirement before the 2027-28 NBA season?: Before the 2027-28 season
KXNBARETIRE-KIRVING11-2728
Cluster 2
Will Kawhi Leonard announce his retirement before the 20
Will Kawhi Leonard announce his retirement before the 2026-27 NBA season?: Before the 2026-27 season
KXNBARETIRE-KLEONARD2-2627
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 3
Will Draymond Green announce his retirement before the 202
Will Draymond Green announce his retirement before the 2027-28 NBA season?: Before the 2027-28 season
KXNBARETIRE-DGREEN23-2728
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
Cluster 4
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 5
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 2028-29 NBA season?: Before the 2028-29 season
KXNBARETIRE-LJAMES23-2829
Analysis
This probability estimates a 38% chance that Russell Westbrook will announce his retirement before the 2028-29 NBA season begins, meaning within the next approximately two years. The current level reflects that Westbrook, now in his mid-30s, has faced declining playing time and roster changes in recent seasons, yet remains under contract and has historically shown willingness to continue playing. Key factors include his age trajectory, injury history, available roster spots, and whether he lands on a competitive team or faces further marginalization. The main uncertainty resolver will be Westbrook's decisions during upcoming NBA free agency periods and whether he receives meaningful playing opportunities, with the 2027-28 season being the critical window for any announcement.
- ›Westbrook's age (36-37 by 2028-29) combined with his playing time trends over the past two seasons
- ›Comparison to peer players: Draymond Green shows 53% probability for retirement before 2028-29, while Kevin Durant shows only 34%, suggesting Westbrook's 38% falls between aging role players and star performers
- ›Contract status and roster demand: whether NBA teams continue to offer him contracts and playing roles that justify continuing his career
- ›Historical precedent: whether Westbrook signals reduced interest in competition or demonstrates sustained motivation through free agency participation
- ›Injury history and physical performance metrics during the 2026-27 and 2027-28 seasons
What moved the line
- Sep 17Before the 2029-30 season↓15pp55→40¢ · Kalshi
- Sep 19Before the 2028-29 season↑11pp23→34¢ · Kalshi
- Sep 23Before the 2028-29 season↓11pp34→23¢ · Kalshi
- Sep 17Before the 2029-30 season↓11pp43→32¢ · Kalshi
- Sep 19Before the 2029-30 season↑11pp32→43¢ · 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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