National Bank Open: Alycia Parks vs Alexandra Eala

Platform comparison

Market context

Alycia Parks and Alexandra Eala are due to meet at the National Bank Open, and the market’s 7% YES price implies Parks is a clear outsider. The most useful comparison is their only completed meeting: Parks beat Eala in three sets at the Australian Open in January 2026, so there is at least one head-to-head result that supports an upset case, but not a broader pattern.[5][9][12]

For context, the longer-form numbers lean towards Eala. TennisStats and TennisRation show Eala with the stronger recent win rate over the past 12 months and in 2026, while Parks has been closer to a .500 profile this year; that makes a low single-digit probability on Parks broadly consistent with the form gap, even allowing for the fact that one prior meeting went her way.[2][3] Comparable cases in tennis pricing usually treat a previous upset as a reason not to dismiss the underdog entirely, but not enough to overturn the underlying season-long record.[5][11]

The key catalyst to watch is whether the draw and match order hold, because the market resolves on the player who actually advances, not just the scheduled pairing. Sofascore and Flashscore list the match as an active event, which means traders should watch for official start-time changes, withdrawals, or an in-match retirement that could still produce a winner; those are the main dependencies that would move the price away from the current pre-match setup.[1][4][13]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page tracks National Bank Open: Alycia Parks vs Alexandra Eala across four political prediction venues. Live odds come from the Polymarket order book (the deepest political prediction-market book). Kalshi is the CFTC-regulated US alternative, Betfair the established UK sports-exchange with politics markets, Manifold the open play-money variant. For users geo-blocked from Polymarket directly, brokers like Trump Prediction provide a 0%-fee route into the same order book.

Resolution & payout

Political markets typically settle on official candidate or agency confirmation. Polymarket uses UMA Optimistic Oracle: a proposer posts the outcome with a bond, the two-hour window opens, then the smart contract pays USDC.

Kalshi settles USD via CFTC clearinghouse, with clearly defined resolution sources (e.g. AP race calls for elections). Betfair settles after the official outcome is registered with the league or agency. Manifold is play-money.

UK Frequently Asked Questions

How accurate are political prediction markets?

Historically more accurate than polls. Polymarket's Brier score on US 2024 elections was ~0.11 — better than 538 (~0.14) and every mainstream poll. Markets aggregate information with real skin in the game.

What resolution source is used for elections?

Polymarket defines the source per contract — usually Associated Press (AP Race Call), Reuters or the official electoral commission. The source is stated in contract details before the market opens.

Which platform has the deepest political liquidity?

Polymarket — by far. US 2024 presidential volume was ~$3.5B vs Kalshi (~$200M) and Betfair (~$120M). Where Polymarket is geo-blocked, brokers like Trump Prediction route into the same order book at 0% fees.

How fast do political markets react to news?

High-liquidity markets move within seconds to minutes. A Trump tweet on the economy can shift the "Trump 2024" market 2-5 points before mainstream media has written anything.

Are UK election prediction markets available from the UK?

Yes. Betfair Exchange and Smarkets offer UKGC-regulated UK election markets (seat counts, party share, constituency results). Polymarket also lists UK election contracts with deeper global liquidity. Betfair winnings are typically tax-free for UK individuals; Polymarket profits are subject to HMRC CGT.