Why “props depth” matters for bettors
When you’re betting player or team props, breadth is leverage. More markets mean more alternate lines, ladders, and correlated combinations for same-game parlays (SGPs) and bet builders. Depth also increases your chances of finding prices that differ across books. Leading US sites put heavy emphasis on props and SGPs, making market depth a genuine differentiator in 2025.
How we define “deep” menus
A sportsbook shows real props depth when it consistently offers across major leagues:
- many categories per game (player totals, milestones, ladders, team totals, race-to-X, intervals/periods),
- flexible SGP/bet builder coverage of those categories, and
- strong live and micro-betting menus that add play-by-play options.
The current leaders for player/team market depth
DraftKings
DraftKings is frequently cited as the best book for prop bettors thanks to huge menus across the big leagues and robust SGP support. Its in-house micro-betting capability (via Simplebet acquisition) also bolsters live prop variety.
What this looks like in practice
• Wide prop categories and alt lines across NFL/NBA/MLB/NHL.
• Active SGP ecosystem across sports.
• Micro-markets now vertically integrated post-acquisition, expanding live props.
FanDuel
FanDuel popularized SGPs and remains a top-tier option for combining sides/totals with player props. Several independent comparisons note particularly broad alternate lines, which contributes to perceived menu depth.
What this looks like in practice
• Quick SGP builder with extensive player/team selections.
• Comparisons cite breadth of alt lines, useful for ladders and correlation.
bet365
Internationally famous for sheer market count, bet365’s Bet Builder+ lets you combine markets across events, and its “Flash Bets”/micro-betting inventory adds rapid-resolution props. Multiple reviews call out market depth and bet-builder flexibility.
What this looks like in practice
• Bet Builder+ and SGP+ style combinations.
• Micro-betting menu availability across major US sports.
BetMGM
BetMGM’s “One Game Parlay” taps into hundreds of bet types, including a deep player/team prop catalog, and recent reviews highlight the breadth of props available for building SGPs.
What this looks like in practice
• 400+ bet-type SGP builder coverage.
• Deep player prop lists across marquee US sports.
Caesars
Caesars offers comprehensive team/player props, strong alt lines, and an upgraded live market through its Kero Sports partnership; earlier Simplebet work added micro-betting as well. Reviews consistently call the props selection expansive.
What this looks like in practice
• Broad pregame player/team props plus alternates.
• Enhanced live/micro markets via Kero and Simplebet.
Fanatics Sportsbook
Fanatics has grown quickly and is competitive on SGP flexibility and boosts. While its menus can trail the “big two” in niche categories, policy notes praise its less-restrictive SGP guidelines and continuing expansion.
Micro-betting and live props: who’s pushing the frontier
Live props and micro-markets (next pitch/play, next possession outcome) materially increase a book’s total prop count. DraftKings’ acquisition of Simplebet brought micro-pricing in-house; Caesars rolled out contextual live markets via Kero while continuing Simplebet integrations. bet365’s Flash Bets remain a staple. If you prize in-play props, these three are leading the feature race in 2025.
Quick audit: how to verify prop depth in three minutes
- Open any NFL or NBA game and count distinct prop categories, not just total listings. Look for milestones/ladders, intervals (quarter/half), and team totals.
- Enter the SGP/bet builder and check which prop types are eligible together. Deep books allow mixing sides/totals with many player stats and team markets.
- Check the live tab: do you see rapid-resolution markets during play (Flash Bets/micro props)? That’s a good proxy for depth beyond pregame menus.
Availability notes and compliance flags
Props menus vary by jurisdiction and sport. In particular, several US states restrict or ban college player props, and New Jersey is advancing a ban specific to NCAA player prop markets. Always check local rules before assuming availability.
Bottom line: the current shortlist
If you’re optimizing for the widest player/team markets across major US sports, start with DraftKings and FanDuel for day-to-day depth, add bet365 for global volume and Bet Builder+, and keep BetMGM and Caesars in rotation for SGP variety and evolving live/micro options. Fanatics is a fast riser worth monitoring, especially for SGP flexibility.
