FanDuel vs BetMGM: Which Has the Better Odds?

A quiet July Tuesday, one MLB game, two different prices. FanDuel had the road team at +115. BetMGM had the home side at -105. Same matchup, same first pitch, numbers that did not agree. The usual FanDuel vs BetMGM debate asks which book you should pick and stick with. That is the wrong frame, and it quietly costs bettors money all season. Neither book wins every line. The gap between them is the point.

Both sit near the top of the US market, but they get there differently. Through March 2026, DraftKings led handle at 35.8%, FanDuel took 32.0%, and BetMGM held 9.8%, per Casino Reports' market tracker. Flip to gross gaming revenue and the order changes: FanDuel jumps to 37.1% while BetMGM sits at 7.2%. FanDuel keeps more of every dollar wagered because of a heavier parlay mix and a higher hold. Translation for you: FanDuel's default pricing is built to squeeze, so the spots where it hangs a generous number are worth catching.

FanDuel vs BetMGM: how the two books differ

Start with pricing habits. FanDuel tends to post lines earlier and shades toward its parlay-heavy audience, which means single-bet moneylines and totals can run a touch tighter than you would like. BetMGM leans the other way. It floods existing users with daily odds boosts and profit-boost tokens, and it carries a deeper bet-type menu, roughly 200 markets on a marquee football or basketball game, including some in-game props FanDuel does not list, according to Sharp Football Analysis.

So the two books are strong in different places. FanDuel pioneered the same-game parlay and still runs the smoother builder, with a 30% profit boost on same-game parlays of three legs or more. BetMGM answers with volume: more markets, more boosts, more chances that one of its many prices drifts out of line with the market. Neither of those is a reason to marry one book. They are two reasons to keep both open.

Where each book is softer

Softness is what you actually care about, not the sign-up bonus on the billboard. FanDuel is the biggest soft book in the country, which cuts both ways. Its models are sharp on headline markets, but its sheer breadth of props and boosts leaves stale corners. BetMGM's edge for a value hunter is those daily boosts and its wider market count, where a hand-priced line can sit a few cents off the consensus longer than it should.

One thing to keep straight: neither is a sharp book. Both are retail operations built for casual bettors, and both follow the accurate numbers that books like Pinnacle and Circa set first. Knowing which category a book falls into changes how you read its prices, a split worth understanding before you trust either one. We break it down in soft vs sharp sportsbooks. The same disagreement that drives the FanDuel vs BetMGM gap is really just how sportsbooks set their lines playing out in real time.

The same game, two prices

Back to that MLB Tuesday. Put the two prices side by side:

• FanDuel: road team at +115 (risk $100 to win $115)
• BetMGM: home team at -105 (risk $105 to win $100)

Convert both to implied probability. The +115 side works out to 46.5%, the -105 side to 51.2%, and they sum to about 97.7%. Anything under 100% means both outcomes can be backed for a return that holds at those prices. Split $1,000 correctly, roughly $476 on the road team at FanDuel and $524 on the home team at BetMGM, and either result pays back about $1,023. That is a $23 return on $1,000, near 2.3% at current odds, whoever wins. The stake-splitting math is laid out step by step in our guide to calculating arbitrage percentages.

This gap did not open because BetMGM got sloppy. It opened because the two books briefly disagreed on the same game, and the disagreement ran wide enough to cover the vig on both sides. Lock both bets before either line moves and the edge is yours. Wait too long and it is gone. Baseball is a good hunting ground for this, since a full slate of games and constant lineup and weather news keeps prices moving all afternoon.

Why picking one book costs you

Loyalty to a single sportsbook is the most expensive habit in betting, and it is easy to measure. BettingUSA's line-shopping analysis puts a bet at -105 instead of -110 and shows the difference: a $2.28 expected loss per $50 wagered shrinks to $1.19, and the break-even win rate you need drops from 52.38% to 51.22%. Over a betting career, taking -105 over -110 saves a modest bettor around $109 for every $5,000 wagered. That is money you hand back every time you settle for the first number you see.

The fix is not being smarter about picks. It is checking both books before every bet and taking the better price. On our July example, a bettor who only ever opens FanDuel takes +115 and moves on. A bettor with both books open sees the -105 on the other side and realizes the two prices together form an edge. That habit is line shopping, and it lifts returns without making you any better at reading a box score. The same logic drove our BetMGM vs DraftKings breakdown: the answer is rarely one book.

Turning the gap into arbitrage

Line shopping and arbitrage are the same instinct at different speeds. Line shopping grabs the best price on the side you already like. Arbitrage waits until the gap between two books grows wide enough to back both sides for a return that holds no matter the result. The catch is time. Two apps open, prices refreshing every few seconds, and a mispriced pair can vanish before you finish typing the second stake. Both books will also trim winners: string together sharp bets and arbs and your max stake starts shrinking, which is why it pays to read up on how to avoid getting limited before you scale up.

That speed problem is what BetSuite is built for. It scans up to 30 sportsbooks across the US and Canada, flags the moment two books disagree enough to open an edge, and lines up both bet slips so you can place them fast. You review and place every bet yourself. BetSuite holds no funds and never submits a wager for you. It just makes sure you catch the FanDuel vs BetMGM gap while it is still on the screen.

Frequently asked questions

Does FanDuel or BetMGM have better odds?

Neither, consistently. FanDuel's odds are slightly friendlier over a long run of bets and post earlier, while BetMGM offers more daily boosts and a deeper bet-type menu. On any single wager the better number can sit at either book, which is why checking both beats trusting one.

Can you arbitrage between FanDuel and BetMGM?

Yes, when the two briefly disagree by enough to cover the margin on both sides. It happens most around line moves, injury and lineup news, and live in-game markets. The edge is usually small, in the 1% to 3% range at current odds, and it closes fast.

Is it worth having accounts at both FanDuel and BetMGM?

For anyone betting regularly, yes. Two accounts let you take the better of two prices on every bet and catch the occasional arb. The only cost is the time to fund a second wallet, and the vig you save compounds across a season.

Will these books limit me for line shopping?

Line shopping on its own rarely triggers limits. Steady arbitrage and always beating the closing line can. Spreading your action across several books and keeping stake sizes sensible helps your accounts last longer.

Disclaimer: Betting involves risk, and no edge is guaranteed. Odds move constantly, and a price shown one moment can change the next. BetSuite is a data and detection tool, not a sportsbook. It holds no funds and places no bets. You place, and are responsible for, every wager. Sports betting is legal only in some states and provinces, and you must be of legal age where you are located.