How We Review & Rate Online US Sportsbooks
Finding legal online sites in your area can be overwhelming, particularly with the numerous options available. That’s where Gambling.com comes in.
Gambling.com makes finding the best legal betting sites easy by connecting you with secure, licensed platforms that seasoned industry experts thoroughly review. Backed by decades of experience, our team applies a strict, transparent grading system so you can confidently choose the right site for you.
We help you cut through the noise by connecting you to secure, licensed, and expertly reviewed sports betting sites you can trust.
We apply a strict methodology to evaluating betting sites in the US. Learn more about our betting review grading system and find the right site.
Sportsbook Review Process
At Gambling.com, we aim to deliver accurate, transparent, and unbiased legal betting reviews so you can bet confidently. Our team of trusted, seasoned industry professionals backs every recommendation we make with decades of combined experience in sports and sports betting.
Our independent testing system is designed to ensure that all reviews and ratings on Gambling.com are accurate and up to date.
We sign up for betting sites and test their features extensively using the process outlined below. The process takes an average of 2 months when testing a new site for the first time.
1. Licensing
We first check whether a site is licensed by a trusted state regulatory body. If the appropriate regulators don’t license a sportsbook, we won't proceed with testing. We do not recommend offshore or blacklisted betting sites, as no governing body has licensed them or ensured the safeguards necessary to protect bettors.
2. Security
A member of our team signs up and evaluates the SSL registration process for data protection.
While signing up should be quick and simple, we also want sites to carry out the necessary legal checks to ensure customers are over 21 and can legally place bets.
3. Fair Odds
This is crucial: checking which betting markets are available and how valuable the odds are. To evaluate betting odds, we research prices for individual betting markets and compare them with odds from leading sportsbooks.
This is one of the lengthier parts of the testing process. We aim to compare odds for 100 markets across at least 15 sports, which can take a few weeks.
4. Responsible Gambling
We also assess a site’s commitment to player safety, including the tools, policies, and messaging it provides to help players stay in control. This includes options such as deposit limits, time-outs, reality checks, self-assessment tools, and self-exclusion.
We expect these tools to be clearly explained and easily accessible. Additionally, we look for links to third-party support organizations and responsible messaging that promote safer play across the site.
5. Banking
The next step is depositing real money into a betting account. At this point, we want to see a wide range of payment methods, including debit cards and digital wallets like PayPal.
We also look for flexible deposit limits and expect funds to be accessible as soon as they're deposited. It usually takes a couple of hours to test all deposit methods and check limits.
We test each withdrawal method to determine how long the process takes, as withdrawal times can vary by method.
6. Welcome Offer
We read the terms and conditions of welcome betting offers (where applicable) so you don't have to.
Then we claim the sportsbook's sign-up offer to ensure it accurately reflects the information outlined in the terms and conditions. We place bets using these credits, typically over a seven-day period, to ensure the site adheres to the offer's terms.
7. Promotions
In addition to welcome offers, sites should offer a range of promotions that can be claimed regularly after signing up.
We test offers such as odds boosts, early payouts, money-back specials, and loyalty promotions to ensure a site rewards existing customers. We spread these tests over a month to ensure we can form opinions on most promos.
8. Market Variety
We place bets on a range of pre-event, outright and in-play markets to determine if this process runs smoothly. After at least 30 bets have been placed, we have a good feel for the process.
We examine the betting slip after placing a bet to check the odds and markets selected. If the bet wins, we verify that the bookmaker pays the correct amount promptly.
9. Customer Support
To assess a site's level of customer service, we contact support agents using all available contact methods.
If a site offers 24/7 live chat, we test this function to check whether support agents deal with queries promptly and professionally.
We also put email and phone support functions to the test during this step of the process.
10. User Opinion
We gather authentic feedback from Gambling.com users to determine whether most bettors have had a positive experience with a sportsbook. We consider user feedback essential to comparing and ranking betting sites, ensuring that real insights shape our recommendations.
You can submit your own opinions and ratings—positive or negative—directly on our sportsbook reviews.
We also conduct ongoing one-to-one user-testing interviews, where players interact with sites under the guidance of trained moderators who maintain a neutral manner and encourage candid, unprompted insights.
Keeping Reviews Up to Date
We then revisit the site at least once monthly to assess any new features that may have been added or removed.
A complete re-evaluation is done at least once every six months using our 10-step procedure.
Red Flags: How we Know Which Betting Sites to Avoid
Sportsbook Rating System
Once we have thoroughly tested a site, our review team will evaluate it in detail and assign an overall rating out of 10.
These scores are combined into a total out of 100, then divided by 10 to produce our final score on a scale of 1 to 10. For example, a sportsbook that scores 92/100 is rated 9.2.
The final rating is calculated by adding the scores across all categories and dividing the total by 10.
Sports & Markets
A diverse range of sports betting markets is crucial to cater to all types of bettors. A betting site must offer depth and variety for each sport to score highly.
Promotions
Strong promos include sign-up bonuses and regular rewards. This rating is based on the amount available, their value, and terms' fairness and transparency.
Payments
Trusted sites prioritize multiple seamless payment methods for deposits and withdrawals. High marks are given for instant withdrawals.
Customer Support
Top sites offer 24/7 live chat and agents who respond within minutes. To earn high marks, a site must respond promptly and have genuinely helpful, courteous support teams.
Reputation & User Feedback
We read verified reviews from real iOS and Android app users, as well as reviews on Reddit and TrustPilot. We also note sites' industry awards and recognitions.
Site UX
We evaluate sites' interface, navigation, and overall quality to ensure bettors can wager without frustration. Sites should avoid crashes or lags.
Mobile Product
A feature-rich mobile app should be easy to navigate, load quickly, and be available on both major app stores. We also look for perks like push alerts and Live Activity.
Responsible Gambling
Responsible gambling should be easily accessible to help bettors stay in control. Top sites provide tools, including limits, timeouts, self-exclusion lists, and resources.
Live Betting
To earn a high score, a site should offer fair early cashouts, real-time stats, and live streams. Streams should run smoothly across platforms with minimal buffering.
Odds Value
Consistently competitive odds translate to better returns. We compare odds pricing to find sites with top value. For a 10/10, a site must consistently outperform its rivals.
An Example of Our Rating Scorecard
| Category | Score | Why? |
|---|---|---|
| Sports & Markets | 7/10 | Exceptional market depth for popular sports; niche sports lacking |
| Promotions | 8/10 | Strong welcome offer; existing user promos lacking |
| Payments | 10/10 | All popular payment methods accepted; instant withdrawals |
| Customer Support | 5/10 | No live chat available; email responses can take 2 days |
| Reputation & User Feedback | 8/10 | Backed by reputable company; user feedback largely positive |
| Site UX | 5/10 | Runs smoothly; navigation makes some markets difficult to locate |
| Mobile Product | 6/10 | Easy navigation; App Store user ratings improving; occassional glitches |
| Responsible Gambling | 9/10 | Responsible gambling section provides useful links; 7 RG tools |
| Live Betting | 10/10 | HD live streams of 12 sports; comprehensive live markets; fair cash out values |
| Odds Value | 8/10 | Better prices than most competitors; some sites still have better odds |
Overall Rating: 7.6/10
Our Verdict: Although the site has some standout features, there is still considerable room for improvement.
Editorial Note
At Gambling.com, we pride ourselves on our impartial reviews of sportsbooks, free from outside influence, in accordance with our editorial guidelines.
We are committed to transparency and accuracy, so we will not give a site a positive review unless it meets our high standards for recommendation.
Most importantly, we only review fully licensed and regulated betting sites that we’ve tested for reliability, so you can be sure of a safe betting experience. You can be 100% confident in our betting sites, which our experts have reviewed and recommended.
