Sports Betting Rules

Updated: July 2026

Introduction

These Sports Betting Rules explain the general principles, common bet types, and settlement conditions that may apply when using the Duel sportsbook.

duel-online.com does not accept bets, operate sportsbook markets, calculate winnings, or settle betting outcomes. All bets are placed and processed directly by the relevant sportsbook operator.

Before placing a bet, users should review the current rules, market descriptions, odds, limits, and settlement conditions displayed on the sportsbook platform. The official operator rules take priority if they differ from the general information provided on this page.

General Rules

By placing a sports or esports bet through a third-party sportsbook, the user confirms that they have reviewed and accepted the applicable operator terms and betting rules.

Sportsbook availability, markets, odds, limits, maximum winnings, and individual features may change at any time.

Users must:

• meet the minimum legal gambling age;
• ensure that betting is permitted in their jurisdiction;
• check all selections before confirming a bet;
• understand that accepted bets may not be changed or cancelled;
• use their own account and payment methods;
• avoid bots, automated betting tools, collusion, and market manipulation;
• comply with the operator’s Terms and Conditions.

Betting Terms

Bet

A bet is a wager placed on the expected outcome of a sporting event, esports match, competition, market, or other supported event.

Stake

The stake is the amount risked by the user when placing a bet.

Odds

Odds show the potential return and represent the sportsbook’s calculated probability of an outcome.

Winnings

Winnings are calculated according to the confirmed stake, accepted odds, and final settlement of the selected market.

Void Bet

A bet may be declared void when it cannot be settled as a win or loss. In most cases, the original stake is returned according to the operator’s rules.

Bet Acceptance

A bet is valid only after it has been accepted and confirmed by the sportsbook.

Users should check the open and settled bets sections of their account to confirm that:

• the bet was accepted;
• the correct market was selected;
• the stake is accurate;
• the displayed odds are correct;
• all selections appear in the bet slip.

The sportsbook may accept, reject, limit, or suspend a bet at its discretion.

duel-online.com cannot confirm, edit, cancel, or settle any bet.

Main Bet Types

Single Bet

A single bet contains one selection from one event or market.

The bet wins when the selected outcome is settled as correct.

Combo Bet

A combo, accumulator, or parlay combines two or more selections.

All included selections usually need to win for the full bet to be successful. If one selection loses, the entire combo may be settled as a loss unless a specific feature or promotion states otherwise.

System Bet

A system bet divides several selections into multiple smaller combinations.

This format may produce a return even when some selections lose, depending on the chosen system and the number of successful combinations.

Bet Builder

Bet Builder allows users to combine multiple markets from the same event into one bet.

Every included selection generally must be correct for the Bet Builder to win.

Common Markets

Match Result

The user predicts the result of the event:

• home team win;
• draw;
• away team win.

Unless otherwise stated, settlement is normally based on regular time.

Double Chance

Double Chance covers two possible results:

• home win or draw;
• home or away win;
• draw or away win.

Totals

Totals markets require the user to predict whether the final number of goals, points, corners, cards, or other statistics will be over or under a selected line.

Handicap

A handicap adds a virtual advantage or disadvantage to a team or participant for settlement purposes.

Handicap rules vary depending on whether the market uses European, Asian, whole, half, or quarter lines.

Correct Score

The user predicts the exact score of the match or a selected period.

Unless the market states otherwise, only the score at the end of regular time is used.

Both Teams to Score

This market asks whether both teams will score within the specified period.

Outright Bet

An outright bet is placed on the final result of a tournament, season, league, or competition rather than a single event.

Regular Time and Extra Time

Unless the market name or sport-specific rules state otherwise, bets are generally settled using the result at the end of regular time.

Regular time may include stoppage or injury time but normally excludes:

• extra time;
• overtime;
• penalty shootouts;
• tie-break periods.

Markets such as To Qualify, Winner Including Overtime, or Lift the Trophy may include additional periods when clearly stated.

Live Betting

Live or in-play betting allows users to place bets after an event has started.

Live odds, scores, timers, statistics, and streams may be delayed or temporarily inaccurate. Users should not rely solely on displayed live data when making a betting decision.

The sportsbook may:

• suspend a market;
• change odds;
• reject a bet;
• delay acceptance;
• stop offering a market;
• correct an obvious error.

A live bet is valid only after confirmation by the sportsbook.

Cash Out

Cash Out may allow a user to settle an active bet before the event has finished.

The amount offered may depend on:

• current odds;
• event progress;
• market status;
• the original stake;
• sportsbook risk calculations.

Cash Out is not guaranteed and may be changed, suspended, or removed at any time.

Once a Cash Out request is accepted and processed, the bet is normally considered settled.

Event Changes

Postponed Events

If an event is postponed, bets may remain active or be voided depending on when the event is rescheduled and the applicable sport rules.

Cancelled Events

If an event is cancelled and no official result is declared, affected bets are generally voided.

Interrupted or Abandoned Events

When an event starts but is not completed, settlement may depend on:

• whether the event resumes;
• the applicable timeframe;
• whether the selected market was already decided;
• sport-specific rules;
• official organizer decisions.

Markets whose outcomes were already unconditionally determined may still be settled.

Venue Changes

A change of venue may or may not affect bets.

Bets may be voided if the designated home and away teams are reversed, depending on the sportsbook rules.

Results and Settlement

Bets are usually settled using results published by an official governing body, league, tournament organizer, or trusted data provider.

The first official result announced after the event may be used for settlement.

Later changes caused by:

• appeals;
• disciplinary action;
• disqualification;
• doping decisions;
• administrative reviews

may not change an already settled bet unless the sportsbook rules state otherwise.

Settlement rules can differ by sport, event, and market.

Errors

An error may include:

• incorrect odds;
• reversed participants;
• incorrect market descriptions;
• technical failures;
• obvious pricing mistakes;
• inaccurate results;
• duplicate markets;
• incorrect settlement.

The sportsbook may correct, recalculate, reject, or void bets affected by a clear error.

duel-online.com has no control over sportsbook pricing, settlement, or error corrections.

Limits and Maximum Winnings

The sportsbook may apply:

• minimum stakes;
• maximum stakes;
• maximum odds;
• maximum winnings;
• market-specific limits;
• account-specific limits.

Limits may differ by sport, market, event, location, currency, and user account.

Displayed potential winnings may also be affected by maximum payout rules.

Esports Betting

Esports betting markets may include:

• match winner;
• map winner;
• round handicap;
• total maps;
• total rounds;
• first objective;
• tournament winner;
• player performance markets.

Settlement depends on the official tournament format, match structure, organizer rules, and confirmed result.

If a team changes its name, roster, or substitute player, bets may remain valid unless the applicable market rules state otherwise.

Sports-Specific Rules

Different sports may use different settlement rules.

These may cover:

• regular time;
• overtime;
• retirements;
• walkovers;
• abandoned matches;
• shortened events;
• non-runners;
• dead heats;
• venue changes;
• player participation;
• tournament format changes.

Where a sport-specific rule conflicts with a general rule, the sport-specific rule normally takes priority.

Betting Integrity

Users must not:

• use inside information;
• manipulate events or markets;
• coordinate bets through a syndicate to bypass limits;
• use multiple accounts;
• place bets through another person’s account;
• exploit technical or pricing errors;
• use automated betting software;
• participate in match-fixing or fraudulent activity.

Bets linked to suspicious or prohibited activity may be rejected, voided, investigated, or reported to the relevant authorities.

Age and Jurisdiction

Sports betting is available only to users who:

• meet the legal gambling age;
• are located in a permitted jurisdiction;
• satisfy the operator’s eligibility requirements;
• are not restricted or self-excluded.

It is the user’s responsibility to confirm that sportsbook use is legal in their country or region.

Availability may vary by location.

Responsible Betting

Sports betting involves financial risk. No market, strategy, system, tip, or statistical model can guarantee a profit.

Users should:

• set a clear betting budget;
• avoid chasing losses;
• avoid borrowing money to bet;
• take regular breaks;
• never bet under pressure or while impaired;
• use available deposit, loss, and session limits;
• seek professional support if betting becomes difficult to control.

Third-Party Operator Rules

All operational matters are controlled by the sportsbook operator, including:

• bet acceptance;
• odds;
• stake limits;
• settlement;
• void bets;
• refunds;
• winnings;
• Cash Out;
• account restrictions;
• payments;
• complaints.

The official sportsbook rules and Terms and Conditions apply to every bet placed on the platform.

Where this page differs from the operator’s current rules, the operator’s published version takes priority.

Changes to These Rules

We may update this page when sportsbook features, common market rules, or general betting information changes.

The latest version will be published with an updated revision date.

Contact and Betting Disputes

Questions about the information published on duel-online.com may be submitted through the contact methods available on this website.

Questions or disputes involving a specific:

• bet;
• market;
• settlement;
• refund;
• Cash Out;
• account;
• deposit;
• withdrawal;
• limit

must be sent directly to the sportsbook operator’s support team.