Bears vs. Bengals

Platform comparison

Market context

The Chicago Bears’ preseason trip to Cincinnati was scheduled for Saturday 22 August at Paycor Stadium, with kickoff listed at 7:00pm ET and both teams entering at 1-0 in exhibition play. ESPN and CBS Sports had the Bears as a narrow away favourite, which sits awkwardly against a 26% crowd-implied price on Bears on a binary market: that level implies a much lower win chance than the conventional moneyline and spread markets around the game[1][2].

For comparison purposes, Polymarket and Kalshi quote the same event as straight probabilities, while Betfair and Smarkets usually display decimal odds that need converting back into implied percentages, and their net price differs once commission is included. That matters here because a low 20s market price can look similar across venues even when the effective take-home differs after fees, and access can also vary by jurisdiction because KYC and regional availability are not uniform across platforms. In other words, the same Bears price may be tradable at different all-in costs depending on venue and account status.

The main catalysts were always roster and team-news related rather than macro: Chicago and Cincinnati had a joint practice on 21 August, and local reports said Bengals starters were not expected to play much, while Bears coach Ben Johnson had not locked in his own lineup before the game[5][11]. That kind of preseason usage can move the market more than the matchup itself, especially if late injury updates, rest decisions, or weather affect who is actually on the field. ESPN’s live listing also showed the game being tracked right up to the settlement window, which is relevant because a postponement would keep the market open until completion, while a cancelled game or tie would settle 50-50[1].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We read Bears vs. Bengals from four platform perspectives: Polymarket (on-chain CLOB), Kalshi (CFTC-regulated exchange), Betfair Exchange (sports book exchange), Smarkets (peer-to-peer betting exchange). Polymarket's live mid is the canonical probability; the side-by-side columns benchmark fees, KYC, settlement currency and deposit rails so you can choose the venue that fits your jurisdiction and trade size.

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

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.

What about Smarkets as an alternative?

Smarkets is a UK betting exchange with a lower default commission (2%) than Betfair. Liquidity on political markets is below Polymarket, comparable to Kalshi. Geo-blocked in many jurisdictions.

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.