Market Depth Isn’t Just Marketing — Here’s How the Major Sportsbooks Actually Compare
Every major sportsbook claims to offer “the most markets,” but that phrase means different things depending on who’s saying it. Some operators lead on sheer market count per game, others lead on niche sports, and others lead on live/in-play depth. Figuring out which one actually fits your betting style takes more than a marketing headline or a single “best sportsbook” ranking.
Smart Bet Insider compares sportsbook coverage the way bettors actually use it — sport by sport, market by market, state by state. This guide breaks down how to measure market depth properly, then applies that framework to DraftKings, FanDuel, BetMGM, bet365, and theScore Bet so you can see where each one genuinely leads and where the marketing outruns the product.
How Should You Measure “Market Depth”?
“Most markets” is only useful if sportsbooks are measured using the same criteria. Instead of relying on claims that DraftKings has the deepest menu or BetMGM offers the most bet types, it helps to compare depth across several measurable dimensions rather than a single ranking.
Sports Breadth and Event Coverage
Sports breadth looks at how many sports and leagues a book covers. Event coverage then asks a narrower question: how consistently do those leagues actually receive full betting markets, rather than just appearing on the schedule with a bare moneyline attached. A book can list a niche league without ever building out props or alternate lines for it.
Market Variety and Player-Prop Depth
Market variety measures the range of options available within a single event, including moneylines, spreads, totals, props, derivatives, and futures. Player-prop depth deserves separate consideration, because two sportsbooks can both offer NFL betting while providing very different numbers of passing, rushing, receiving, and touchdown markets for the same game.
Alternate Lines and Live Betting
Alternate-line depth is another useful distinction, particularly for bettors who want more flexibility around standard spreads, totals, or player projections rather than the single number a book displays by default. Live betting should be measured independently too, since a sportsbook can have extensive pregame coverage but relatively few markets once an event actually begins.
Parlay Flexibility and Niche Coverage
Same-game parlay functionality can vary significantly by sport and market. DraftKings currently supports same-game parlays across NFL, NBA, MLB, NHL, MMA, soccer, and college sports, and its SGPx product can combine same-game parlays from multiple games into one slip. DraftKings has also expanded SGP functionality into golf, allowing combinations of tournament, round, and player-performance markets.
Using these six criteria produces a far more meaningful comparison than declaring one sportsbook the overall “market leader.” It shows where each operator is actually strongest — and whether that strength applies to the sport, bet type, and betting format you personally use most often.
DraftKings and FanDuel: The Market Leaders by Volume
Any market-depth conversation starts with the two operators that dominate the industry by both revenue and product investment. As of Q1 2026, FanDuel leads the US sportsbook market with 44% of gross gaming revenue, followed by DraftKings at 34% and BetMGM at 14%, giving these two books the scale to support the deepest markets on the biggest games of the week.
What Separates Them
Overall, DraftKings is frequently rated as having the deepest variety of betting markets among major US sportsbooks, with strength in proprietary technology and product features like live streaming and micro-betting. FanDuel counters with a smoother live cash-out experience and slightly stronger app store ratings, but the two are close enough that a head-to-head comparison found FanDuel to be the better overall sportsbook only slightly.
Why the Gap Keeps Shrinking
Because DraftKings and FanDuel compete directly for the same recreational bettors, product gaps between them tend to close quickly. Both are widely considered market leaders for sports betting in most states across the nation, which pushes each to match the other’s prop counts, alternate lines, and parlay tools rather than fall behind on any single sport.
BetMGM: Widest Range of Bet Types
While DraftKings and FanDuel win on total market count, BetMGM has built its reputation around variety of bet type rather than raw volume. When lining up the major betting apps side by side, BetMGM normally has the largest array of bet types, spreading its markets across a wide menu of specialty and alternate options that go beyond the basics.
Where BetMGM Fits Best
This makes BetMGM a strong pick for bettors who like exploring unusual angles on a game rather than just the standard lines. Existing customers also get access to daily odds boosts on specific betting markets, which effectively surfaces some of that market variety directly in the app rather than requiring bettors to dig for it. BetMGM pairs this with a rewards ecosystem tied to MGM’s physical casino properties, which none of the pure-digital books can match.
bet365: The Depth Champion for Live and Niche Sports
If the comparison shifts to live, in-play, and international coverage, bet365 pulls ahead of the domestic-first operators by a wide margin. One review recorded more than 220 in-play markets per Premier League soccer fixture, a depth level that’s difficult to find on any book built primarily around U.S. leagues. Its markets extend to the deepest international soccer book of any US-licensed sportsbook, including extensive coverage of the EPL, Champions League, MLS, Liga MX, Serie A, and La Liga.
Same-Game Parlays and Alternate Lines
bet365’s same-game parlay tools are built to match that depth. Same-game parlay enthusiasts can combine wagers with alternative point and assist totals, receptions, and last-touchdown-scorer props, and the book layers in a “Same Game Parlay+” feature that allows users to combine multiple same-game parlays from different games into a single mega-parlay. Its alternative lines for player props often go a step further than what most U.S. sportsbooks provide, giving bettors higher or lower numbers than the standard line on offer elsewhere.
The Trade-Off: Availability
The catch is state availability. bet365 is licensed for online mobile sports betting in 13 US states, compared to the 20-plus states covered by DraftKings, FanDuel, and BetMGM — meaning its market depth advantage doesn’t reach every bettor, no matter how deep the menu looks on paper.
theScore Bet: Consolidated but Competitive
theScore Bet, the sportsbook formerly known as ESPN Bet, rounds out the comparison with a menu built to compete directly with the bigger names rather than carve out a niche. Its markets span basketball, baseball, football, hockey, tennis, and golf, with player props, same-game parlays, and futures available across each.
Feature Parity, Smaller Footprint
Features like a Parlay Lounge for trending markets, Profit Boosts, and live bet tracking put it functionally in line with the bigger books, even if its total market count doesn’t quite reach bet365’s live-betting depth or BetMGM’s bet-type variety. Its 20-state U.S. footprint keeps it competitive on availability, if not on sheer volume, and its account infrastructure carried over cleanly from the ESPN Bet era rather than starting from scratch.
Getting the Full Picture Before You Bet
Comparing sportsbooks by market count alone misses the details that actually matter: which book has the deepest player props for the sport you follow, which one supports your state, and which one’s same-game parlay tool is actually flexible enough to use the way you want. Reading a single ranked list rarely answers all three questions at once, and the “best” answer usually depends on your sport of choice more than any operator’s overall reputation.
Smart Bet Insider tracks sportsbook market coverage as it changes — new states, new prop categories, and shifting depth as operators compete for the same bettors. Checking a source that updates regularly beats relying on a static “best sportsbook” list that may already be out of date by the time football season, or a new state launch, changes the picture again.
Conclusion: The Right Answer Depends on What You Bet
There’s no single sportsbook that wins “most markets” across every category, and treating the question that way misses how differently these operators actually compete. DraftKings and FanDuel lead on overall volume and polish, BetMGM wins on bet-type variety, bet365 dominates live and international depth, and theScore Bet offers a competitive all-around menu with a smaller footprint. The best choice comes down to which sport, market type, and state matter most to you personally.
For a closer look at how these sportsbooks compare on your specific state, sport, or bet type, Smart Bet Insider keeps its coverage current so you’re comparing today’s markets, not last season’s rankings.
FAQs
Which sportsbook has the most betting markets overall?
DraftKings is frequently cited as having the deepest overall variety of betting markets among major U.S. sportsbooks, though FanDuel runs close behind and often wins narrowly in head-to-head comparisons of the overall experience.
Which sportsbook offers the most bet types per game?
BetMGM normally has the largest array of bet types when compared against the other major betting apps, making it a strong option for bettors who want alternative and specialty markets beyond standard lines.
Which sportsbook is best for live and in-play betting?
bet365 leads on live-betting depth, with more than 220 in-play markets recorded on a single Premier League soccer fixture — a level of live coverage that’s hard to match among U.S.-focused operators.
What’s the difference between an SGP and an SGPx?
A same-game parlay combines multiple bets from a single event, while an SGPx (or SGP+/Bet Builder+, depending on the operator) lets you combine several same-game parlays — or single bets — from different games into one larger wager.
Does market count matter more than state availability?
Not necessarily. bet365 is licensed in only 13 US states, compared to 20-plus for DraftKings, FanDuel, and BetMGM, so a sportsbook with deeper markets may not be usable in your location at all.
Is theScore Bet’s market coverage comparable to the bigger sportsbooks?
theScore Bet covers the same major sports as its larger competitors — basketball, baseball, football, hockey, tennis, and golf — with player props, same-game parlays, and futures, though its overall market depth and 20-state footprint trail bet365’s live-betting range and BetMGM’s bet-type variety.
How can I keep track of which sportsbook has the best markets for my sport?
Market depth shifts as operators add or remove props, expand into new states, and update same-game parlay tools. Smart Bet Insider tracks these changes so bettors can compare current coverage rather than relying on outdated rankings — always confirm current terms directly with the sportsbook before wagering.