Philadelphia Phillies vs. Milwaukee Brewers

Platform comparison

Active sub-markets

Market context

The Philadelphia Phillies face the Milwaukee Brewers on 13 June at 7:10 PM ET in a regular-season matchup. The 40% implied probability for a Phillies victory reflects moderate confidence in Milwaukee, though both teams compete in the competitive National League Central division where recent form and injury status shift odds considerably. Across major platforms, this probability translates differently: Polymarket displays decimal odds around 1.67 for a Brewers win, whilst Kalshi and Betfair quote fractional or decimal equivalents that account for their respective fee structures—typically 2% on Kalshi versus variable commission on Betfair. Smarkets' peer-to-peer model may show tighter spreads if liquidity concentrates, though KYC requirements differ across jurisdictions, affecting which traders can access each book.

Historical context matters here. The Phillies have maintained stronger regular-season records than Milwaukee in recent years, yet the Brewers' bullpen depth and defensive efficiency have produced close contests. Last season's head-to-head record and current win-loss differential should anchor baseline expectations; teams with similar records typically trade closer to 50-50 unless one roster carries clear injury disadvantages.

Traders should monitor roster announcements through 12 June, particularly starting pitcher confirmations and any late-inning arm availability. Weather forecasts for Philadelphia could affect game dynamics, whilst any postponement triggers the market's extension clause through 20 June. Recent news from MLB injury reports and team statements will clarify whether either side faces unexpected absences that might shift the current 40% reading materially.

Methodology

This page compares Philadelphia Phillies vs. Milwaukee Brewers specifically across Polymarket, Kalshi, Betfair Exchange and Smarkets. Live odds come from the Polymarket order book; the other venues' contract details are maintained manually because their APIs aren't directly comparable. Every CTA routes to Kalshi Alternative UK, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Polymarket settles via UMA Optimistic Oracle on Polygon. A proposer posts the outcome with a bond, the two-hour window runs, then the smart contract pays USDC.

Kalshi settles USD through the CFTC-regulated clearinghouse — the cleanest variant, with heavier KYC. Betfair Exchange settles in account currency (GBP/EUR), net of 2-5% commission. Smarkets follows the same model as Betfair with a lower default 2% commission.

FAQ

Where can I trade this market with the lowest fees?

On Kalshi Alternative UK, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, Kalshi Alternative UK triggers a quick verification flow that finishes in minutes.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.