How to Bet on Esports on Polymarket: Series, Maps, Games Totals and Live Betting

Polymarket lists a best-of-three esports series as a moneyline market, its title carrying "(BO3)": "Counter-Strike: Falcons Force vs mellren (BO3)", "LoL: GIANTX vs Natus Vincere (BO3)". CS2, Valorant, Dota 2 and League of Legends each carry best-of-three series most often; some brackets run best-of-one or best-of-five, marked the same way.

Around the series moneyline sit a Map 1 Winner and Map 2 Winner market for CS2 and Valorant, or a Game 1 Winner and Game 2 Winner market for Dota 2 and LoL, each paying $1 a share on the team that takes that map, and a Games Total market, usually "Games Total: O/U 2.5", that pays Over if the series needed a third map and Under if it was swept in two. On the 0xinsider event page for a series, the Markets section lists the moneyline beside every map and totals market with each one's own volume.

Across 160,183 settled markets on CS2, Valorant, Dota 2 and LoL since January 2025, Polymarket reported $5.55 billion in volume. The series moneyline took 50.4% of it and the map or game winner markets together took 45.0%, so on a typical series almost as much money trades on the individual maps as on who wins outright. Map handicaps took 2.7%, the Games Total market 1.0%, and kill and round props under 1% combined.

Read that as where the liquidity is: a series moneyline and its map winner markets are usually deep enough to trade at size, while a round-total or kill-count prop on a single map can carry a price with very little behind it. Check a market's own volume before sizing a bet on it.

The series moneyline resolves to the team that wins the series outright, first to two maps in a best-of-three. A Map or Game Winner market resolves to the team that wins that specific map, whether or not the series needed it: a Map 2 Winner market still settles even when the series ended after two clean wins. The Games Total market resolves Over if the series went the distance and Under if it did not; for a best-of-three that is Over on three maps played, Under on two.

A postponed match keeps every one of its markets open until it is played. A match canceled entirely with no make-up settles every market on it 50-50, moneyline, maps and totals alike. Checking Polymarket's three settlements against each other, a team that won map 1 and map 2 always has to hold the series and the Games Total market always has to settle Under: on 9,504 best-of-three series where all four markets settled, that held on 9,501 of them, 99.97%, the study at 0xinsider.com/research/esports-first-map-winner-polymarket has the three exceptions.

A Polymarket share pays $1, so its price is a probability. A team priced at 68 cents to win the series is a 68% chance; buy $100 of it and you hold about 147 shares that pay about $147 if the team wins. The map winner markets work the same way, each map its own price that can move independently of the series price as maps are picked and results build.

Sportsbook odds convert the same way: a favorite at -212 is 212 divided by 312, about 68%. Across 9,161 priced series, the average series favorite went off at 67.98 cents and won 68.1% of the time, so the price at the start of a series is close to fair; the study above has the breakdown by price band.

A Map or Game 1 Winner market lets you take a position on the opening map without committing to the series. The team that wins map 1 goes on to win the series 79.5% of the time across 9,501 counted series, above the 75% two evenly matched teams would produce, so a map 1 win is meaningful but not decisive: it still fails about one time in five. The pre-match series favorite wins map 1 itself only 63.8% of the time, so an underdog opening a series ahead is common.

The Games Total market is a bet on the series length rather than the winner: 58.7% of series were swept 2-0, well above the 50% a coin flip would give, because most series have a real favorite going in. A heavy favorite, priced 90 cents or more to win the series, is also the surest bet on a quick finish; a close-priced series is more likely to need the third map.

Esports markets keep trading map to map. A series moneyline that opened near even can move sharply once map 1 finishes, since it resolves nearly four series in five for the winning side. The map 2 and Games Total markets carry the freshest information right after map 1, before map 2 itself has started.

A limit order at your price avoids chasing a market that is moving with the score, and a resting order that fills pays no taker fee. The guide at 0xinsider.com/learn/how-to-find-sharp-money-polymarket-sports covers reading the wallets trading a series as it plays out.

The esports board at 0xinsider.com/sports/esports lists live and upcoming series with an active Polymarket market. CS2, Valorant, League of Legends and Dota 2 each carry their own board at 0xinsider.com/sports/esports/cs2, /valorant, /lol and /dota2; every other title, including Rocket League, Call of Duty, Rainbow Six and Overwatch, appears on the parent board. Each card shows both teams' prices and the top holders on each side with their grades.

Open a series for its event page, where the Markets section lists the moneyline beside the map, game and totals markets and each one's volume. The whale alerts feed at 0xinsider.com/whale-alerts shows every large esports trade as it fills.