Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Kalshi Alternative UK) Pick polygram.ink (preferred broker) |
74% | 26% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
74% | 26% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Trade this market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Trade this market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Trade this market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Trade this market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 1st 5 Innings O/U 2.5 | 74% |
| 1st 5 Innings O/U 3.5 | 60% |
| O/U 7.5 | 54% |
| Chicago White Sox vs. Detroit Tigers | 49% |
| 1st 5 Innings O/U 4.5 | 47% |
| O/U 8.5 | 46% |
| NRFI | 45% |
| Spread -1.5 | 37% |
| 1st 5 Innings O/U 5.5 | 36% |
| O/U 9.5 | 35% |
| Spread -1.5 | 34% |
| 1st 5 Innings Spread -1.5 | 30% |
| 1st 5 Innings Spread -1.5 | 28% |
| Spread -2.5 | 26% |
| 1st 5 Innings O/U 6.5 | 24% |
| Spread -2.5 | 24% |
| Extra Innings | 10% |
Market context
The Chicago White Sox face the Detroit Tigers on 16 August at 1:40 PM ET in a regular-season MLB matchup. The 49% crowd-implied probability reflects near-parity in market assessment, though the settlement window extends to 23 August, allowing for postponement resolution should weather or scheduling issues arise. Across major platforms, this market exhibits notable structural differences: Polymarket displays decimal odds (approximately 2.04 for either outcome at current probability), whilst Kalshi presents American moneyline formatting; Betfair and Smarkets offer fractional odds displays, with fee structures ranging from Kalshi's 2% taker fee to Betfair's variable commission model. The 50-50 tie-resolution clause distinguishes this contract from some competing venues, which treat extra-inning conclusions differently.
Historical context suggests White Sox-Tigers matchups carry moderate volatility. The White Sox entered 2024 amid a significant rebuild following their 2023 collapse, whilst Detroit has competed more consistently. Head-to-head records between these franchises show no pronounced home-field advantage at Comerica Park or Guaranteed Rate Field. Recent form matters considerably: as of mid-August, team win-loss records, bullpen availability, and starting pitcher assignments will determine whether the 49% probability reflects genuine uncertainty or market inefficiency.
Traders should monitor roster announcements through 16 August, particularly injury updates to key pitchers or position players. Weather forecasts for Detroit on game day merit attention, given the settlement clause's postponement provisions. Comparative liquidity across platforms—Kalshi typically shows tighter spreads on MLB markets than smaller venues—may influence execution costs for position entry or exit.
Live Data & Statistics
Live stats load when the match begins. Current market odds are shown above. Trading volume: $202K.
Methodology
This page compares Chicago White Sox vs. Detroit Tigers specifically across Polymarket, Kalshi, Betfair Exchange and Smarkets. The live probability is the Polymarket mid; the comparison columns summarise each venue's fee structure, KYC, settlement currency and payment rails. Every CTA routes to Kalshi Alternative UK, which mirrors the Polymarket order book at 0% fees.
Resolution & payout
Settlement is the biggest difference between the four platforms: Polymarket on-chain in USDC (instant), Kalshi USD via CFTC (T+1), Betfair and Smarkets in local currency via bank withdrawal (T+1 to T+3). On-chain settlement clears in minutes — the fastest payout path of the four.
UK Frequently Asked Questions
- Polymarket vs Kalshi — which is better?
- Depends on your location. Kalshi is CFTC-regulated, US-only with full KYC. Polymarket is global, on-chain, no KYC up to $1,500. Polymarket has ~10x higher liquidity but higher regulatory risk.
- Which platform has the deepest liquidity?
- Polymarket — by a wide margin. Top markets reach $50-500M volume, Kalshi ~$200M cumulative, Betfair similar. Deeper liquidity means your trade moves the quote less.
- Is Betfair a Polymarket alternative?
- Only partially. Betfair Exchange is UK-focused with a sports-betting emphasis; they have politics markets but with thinner liquidity than Polymarket. Settlement in GBP/EUR, 2-5% commission on winnings.
- Polymarket vs Betfair Exchange: which is better for UK prediction trading?
- Betfair Exchange offers UKGC regulation, GBP settlement, and potentially tax-free winnings — but focuses on sports and politics only. Polymarket has deeper liquidity, 0% platform fee, global event coverage, and crypto/geopolitical markets Betfair doesn't offer. For UK traders: Betfair for regulated GBP sports markets; Polymarket for broader, global prediction events.
- Is Kalshi available in the UK?
- Kalshi is a US CFTC-regulated prediction exchange. UK residents can create accounts but must use USD and US payment methods. Kalshi's product range overlaps with Polymarket but with lower liquidity on most contracts. For UK traders, Polymarket typically offers better prices due to higher global volume.
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