Esports Betting Glossary: Maps, Bo3, Map Win Rate, Veto and More

Core match formats: Bo1, Bo3 and Bo5

The first thing to read on any esports bet slip is the series format, because it decides how many maps your bet depends on.

Bo1 is a single map. One map, one result, no comeback. Bo1 matches are common in group stages and qualifiers, and they are the most volatile format to bet because a single bad draft or a slow start ends the series.

Bo3 means best of three. The first team to win two maps takes the series, so between two and three maps get played. If a team wins the first two maps, the third is not played at all. That matters for totals: a bet on over 2.5 maps in a Bo3 only wins if all three maps are played¹.

Bo5 means best of five, first to three maps. Grand finals and some upper-bracket finals use Bo5. More maps means more room for the better team to win, which is why the strongest teams are usually shorter priced in a Bo5 than in a Bo1 against the same opponent.

A practical point that catches first-timers: in a Bo3, a "match winner" bet and a "map winner" bet are not the same thing. You can win a map winner bet on map one and still lose the match winner bet if the opponent takes maps two and three. Read the market name before you stake.

Maps and map win rate

A map is one game within a series. In CS2 a map is a round-based game on a single battlefield, such as Mirage or Inferno. In Dota 2 and League of Legends a map is one full game on the single competitive map those titles use. In Mobile Legends and Valorant, maps work the same way as CS2: a series is played across several different maps.

Map win rate is the share of maps a team has won over a chosen period, usually shown per map. If a team has played 20 maps on Mirage and won 14, its Mirage map win rate is 70 percent. Books and stats sites show this because some teams are genuinely stronger on certain maps, and the veto often decides whether a team gets to play its best one.

Two cautions on map win rate:

• It is a form guide, not a price. A team can hold a 70 percent map win rate against weaker opposition and still be the underdog against a top side.
• Sample size matters. A 100 percent record over three maps tells you almost nothing. Look at the number of maps behind the percentage.

Map win rate is also the input for map handicap markets. If you back a team at -1.5 on maps, they need to win by at least two maps for the bet to land¹. That is a different question from "will they win the series", and it is priced accordingly.

The veto: how map bans and picks work

The veto is the ban and pick phase that runs before a series. Teams take turns removing maps they do not want to play and choosing the ones they do. The maps that survive the veto are the maps that get played, in the order set by the format.

Why the veto matters to a bettor:

• It decides which map markets exist. If a map is banned, there is no market on it.
• It decides whether a team gets its comfort pick. A team with a strong map win rate on one map can have that map banned away before the series starts.
• It changes prices. Map winner odds often move once the veto is complete, because the matchup is now known rather than theoretical.

In CS2 the veto is usually a straight ban and pick sequence. In Dota 2 the pick and ban phase works differently, but the principle is the same: the pre-match phase decides the conditions the series is played under. If you are betting map markets, watch the veto before you stake, not after.

Bet types: match winner, map winners, total kills and live props

Most esports bet slips use a small set of market names. Here is what each one means in plain terms.

Match winner is the simplest market and the one most people start with. Map winner splits the series into individual games, which is useful when one team is strong on a particular map. Total kills is a combined figure for both teams, and it is one of the most traded esports markets because kill counts are high and volatile in titles like League of Legends and Valorant¹.

Live props are markets that open or change while the match is running. First blood is the classic example: it settles within the first minutes, and the price moves fast¹. Live odds shift in real time as the match develops, so the number you see is the number at that moment, not a fixed price¹.

Tournament markets sit above the series level. Books offer outright winner, group winner, group first and second, final pairing, number of titles for a team, winning continent, winning country, promotion, relegation, qualification and last place³. These settle at the end of the event, so your money is tied up longer.

Odds formats and markets by title: Dota 2, CS2, LoL and mobile esports

Odds are shown in three common formats: fractional, decimal and American¹. Decimal is the easiest to read: a PHP 100 bet on a team at 3.00 odds returns PHP 200 profit plus your PHP 100 stake, a total of PHP 300¹.

Prices differ by title for structural reasons:

• CS2 is round-based and map-based, so map winner and total rounds markets are central. A total rounds line such as over 26.5 on a single map is a typical CS2 market¹.
• Dota 2 is a single-map game with long matches, so match winner, map handicap and total kills carry most of the volume⁴.
• League of Legends is similar in structure to Dota 2, with total kills and map winners as the core markets¹.
• Mobile esports such as PUBG Mobile and Mobile Legends price differently because the formats differ. PUBG markets include champion team, total kills and final placement, while Valorant markets include map winner, total rounds and handicap⁴.

The practical takeaway: the same word can mean different things across titles. "Total" in CS2 usually means rounds. "Total" in League of Legends usually means kills. Always read the market description, not just the label.

Bet limits: from $1 minimums to $500+ maximums

Bet limits are set by the operator, and they vary widely. Some esports books take minimum bets from $1, with maximums of $500 or more across major global tournaments². Combat sports markets on the same platforms run from $1 up to $20,000².

Regulated markets set their own floors and ceilings, and these are worth knowing if you bet through a licensed operator:

• Singapore: the minimum stake for football bets placed remotely is SGD 1, and SGD 5 at betting outlets and authorized retailers⁵.
• South Korea: the unit betting amount for a sports promotion voting ticket is KRW 1,000 or less⁶.
• Vietnam: under the draft decree, the minimum bet is VND 10,000 per bet and the maximum is VND 10,000,000 per player per day⁷.
• Macau: the minimum for internet basketball betting is MOP/HKD 10.00, and MOP/HKD 50.00 for cash betting⁸.

If you are used to a $1 minimum on an offshore esports book, a licensed operator's floor can feel high. Check the minimum before you build a slip, because a stake below the floor will be rejected.

Titles you can bet on: six games from Dota 2 to PUBG Mobile

Esports coverage is broad. One operator lists Dota 2, Mobile Legends, PUBG, Valorant, CS2 and League of Legends as its core titles⁴. Another describes its sportsbook as covering dozens of sports, from the NFL, NBA and horse racing to esports and combat sports like boxing and UFC².

The main esports titles you will see priced:

• Dota 2: match winner, map handicap, total kills⁴.
• CS2: map winner, total rounds, map handicap¹.
• League of Legends: match winner, map winner, total kills, live props¹.
• Valorant: map winner, total rounds, handicap⁴.
• Mobile Legends: match winner, map winner, total kills⁴.
• PUBG and PUBG Mobile: champion team, total kills, final placement⁴.

Beyond those, books list tournament outrights across the wider calendar, including group winner, qualification and last place markets³. If a title has a regular league and a streaming audience, there is usually a market on it.

Where esports betting is illegal: Singapore's position

Singapore Pools is the only legal lottery and sports betting operator in Singapore⁹. That is the single fact that decides where a Singapore-based reader can bet legally.

There is also a specific restriction for people inside the game. Any player, official or volunteer registered, employed, deployed or appointed by an entity taking part in the Singapore Premier League and the Singapore Cup is not allowed to place any bet in those competitions, or in any other competition their entity takes part in, whether in Singapore or elsewhere⁹.

For everyone else, the practical position is the same as for other betting in Singapore: use the legal operator or do not bet. If you are a visitor or an expat, the rules do not change because of your passport. For the wider picture across the region, see esports betting in Asia and esports betting as a visitor or expat.