Sports betting: how it works, and how to check the bookmaker first
Sportsbook and casino in one account: what that means for you
Many operators, in Latvia and elsewhere, run a sportsbook next to their casino, with one login and one balance for both. That is convenient, but it has practical consequences. The betting rules are usually a separate document from the casino terms, and the limits you set may or may not cover both products. This guide explains how sports betting works in general. It does not describe which sports, markets, odds or margins Optibet or any other bookmaker offers — for that, look at the operator's own sportsbook and betting rules.
Before any of that, one check matters more than every tip below: who is the company behind the bookmaker? Its name is in the terms and conditions. If you are in Latvia, that company should appear in the list of licensed gambling organisers published by VID, the State Revenue Service. Elsewhere, your country's regulator and rules apply.
How to read betting odds
Odds tell you what a winning bet returns. Decimal and fractional odds are the two formats you will meet most often. Decimal odds multiply your whole stake: for example, €10 at 2.50 returns €25, which is €15 profit plus your €10 back. Fractional odds show only the profit relative to the stake, so 6/4 is the same price as 2.50. Odds explained honestly always include the next step: 1 divided by the decimal price gives the implied probability, here 40%.
Add up the implied probabilities of every outcome in a market and you will usually get more than 100%. The difference is the bookmaker's margin. In a hypothetical two-way betting line priced 1.91 on each side, each outcome implies about 52.4%, together about 104.8% — the extra 4.8% is roughly what the bookmaker keeps over time. Margins differ between operators and markets, and comparing them is one of the few edges a careful bettor has.
Live betting: in-play markets and cash out
Live betting means placing bets after an event has started. In-play markets react to the score, the clock and red cards or injuries, so live odds move quickly and markets are often suspended for a few seconds after anything important happens. Bets placed live may be delayed briefly before acceptance, and the price you get can differ from the one you clicked if it changed in the meantime — the betting rules say how that is handled.
Cash out, where offered, lets you settle a bet before the event ends for an amount the bookmaker proposes at that moment. It is a convenience, not a gift: the offer has a margin built in, it can be withdrawn at any second, and not every market or bet type qualifies. Whether a particular operator offers cash out, and on what, is in its own rules.
Betting bonus offers: free bets and odds boosts
A betting bonus works differently from a casino bonus. Common formats include a free bet after a qualifying wager, an odds boost on selected events, bet insurance that refunds a losing stake as bonus credit, and an acca boost that adds a percentage to accumulator winnings. The conditions are where the value is decided: minimum odds, which markets count, whether the free bet stake is returned with the winnings, and how long you have to use it. Read them as what they are — part of your contract with the company named in the terms. Our page on wagering requirements explains how turnover conditions work.
How to start: from checking the bookmaker to confirming the bet
Check the company first, as described above. Then set a deposit limit and decide on a fixed stake size before you look at any odds; it is much easier to choose a rule when no match is tempting you. To place a bet, open an event, pick a market and tap the outcome — it lands on the bet slip, where you enter the stake, check the potential return and confirm. Start with sports you actually follow: our guides to football, basketball, tennis and ice hockey explain how their markets behave, and the bet types guide covers singles, accumulators and systems.
If betting stops being entertainment — chasing losses, hiding stakes, borrowing to bet — use the tools on our responsible gambling page. In Latvia you can also exclude yourself from all licensed gambling through the self-exclusion register for at least 12 months; see self-exclusion.
How do I place a bet?
What is cash out?
What is the difference between a single and an accumulator?
Where do I find the betting rules?
How can I check that a bookmaker is licensed?
Guides: Bet types · Football · Tennis · Basketball · Ice hockey
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