Fanatics Sportsbook vs Fliff: where their odds disagree
Over the last 30 days, Fanatics Sportsbook and Fliff quoted the same line at prices that summed to less than 100% on 28 game-markets — a cross-book arbitrage — with an average net edge of 6.02% and a peak of 14.26%. On plain vig, Fanatics Sportsbook is the cheaper book of the two. Last disagreement: Sep 19, 2026.
Vig: Fanatics Sportsbook vs Fliff
| Fanatics Sportsbook | Fliff | |
|---|---|---|
| Overall overround | 4.75% | 6.23% |
| Moneyline | 4.54% | 5.61% |
| Spreads | 4.91% | 6.49% |
| Totals | 4.80% | 6.50% |
| NFL | 4.65% | 6.07% |
| MLB | 4.87% | 6.13% |
| NBA | 4.64% | — |
| NHL | 4.73% | — |
| MLS | — | 9.87% |
Disagreements by sport
How big the edges were
Share of detections by net edge bucket. Most cross-book edges are small; the tail is where the money and the execution risk both live.
Recent examples
Best detection per game-market, most recent first. These windows have closed.
| Game | Market | Legs | Net edge | Detected |
|---|---|---|---|---|
| Atlanta Braves @ Houston Astros · MLB | moneyline | Atlanta Braves @ Fanatics Sportsbook + Houston Astros @ Fliff | 0.35% | Sep 18, 10:37 PM ET |
| Boston Red Sox @ Texas Rangers · MLB | moneyline | Boston Red Sox @ Fliff + Texas Rangers @ Fanatics Sportsbook | 6.08% | Sep 17, 11:05 PM ET |
| Athletics @ Tampa Bay Rays · MLB | spread 8.5 | Athletics @ Fanatics Sportsbook + Tampa Bay Rays @ Fliff | 3.80% | Sep 17, 3:58 PM ET |
| Baltimore Orioles @ New York Mets · MLB | total 8.5 | Over @ Fliff + Under @ Fanatics Sportsbook | 8.62% | Sep 16, 9:45 PM ET |
| Baltimore Orioles @ New York Mets · MLB | spread 6.5 | Baltimore Orioles @ Fliff + New York Mets @ Fanatics Sportsbook | 14.11% | Sep 16, 9:45 PM ET |
| Philadelphia Phillies @ Washington Nationals · MLB | moneyline | Philadelphia Phillies @ Fanatics Sportsbook + Washington Nationals @ Fliff | 1.05% | Sep 16, 8:14 PM ET |
| Milwaukee Brewers @ Pittsburgh Pirates · MLB | spread 5.5 | Milwaukee Brewers @ Fliff + Pittsburgh Pirates @ Fanatics Sportsbook | 1.94% | Sep 15, 9:02 PM ET |
| Athletics @ Tampa Bay Rays · MLB | total 6.5 | Over @ Fanatics Sportsbook + Under @ Fliff | 3.31% | Sep 15, 8:01 PM ET |
| Chicago Bears @ Carolina Panthers · NFL | total 89.5 | Over @ Fanatics Sportsbook + Under @ Fliff | 7.68% | Sep 13, 4:18 PM ET |
| New York Jets @ Tennessee Titans · NFL | moneyline | New York Jets @ Fliff + Tennessee Titans @ Fanatics Sportsbook | 7.98% | Sep 13, 3:02 PM ET |
| New Orleans Saints @ Detroit Lions · NFL | moneyline | Detroit Lions @ Fanatics Sportsbook + New Orleans Saints @ Fliff | 2.13% | Sep 13, 2:32 PM ET |
| Cincinnati Reds @ Milwaukee Brewers · MLB | total 22.5 | Over @ Fanatics Sportsbook + Under @ Fliff | 0.42% | Sep 12, 10:15 PM ET |
| Seattle Mariners @ Athletics · MLB | total 9.5 | Over @ Fanatics Sportsbook + Under @ Fliff | 6.24% | Sep 12, 1:06 AM ET |
| Washington Nationals @ San Diego Padres · MLB | spread 6.5 | San Diego Padres @ Fanatics Sportsbook + Washington Nationals @ Fliff | 14.26% | Sep 9, 6:48 PM ET |
| Tampa Bay Rays @ Atlanta Braves · MLB | total 7.5 | Over @ Fanatics Sportsbook + Under @ Fliff | 1.23% | Sep 8, 9:38 PM ET |
Frequently asked questions
How often do Fanatics Sportsbook and Fliff disagree?
In the last 30 days our scanner recorded 28 game-markets where Fanatics Sportsbook and Fliff quoted the same line at prices whose implied probabilities summed to less than 100% — a cross-book arbitrage — across 28 scans. The average net edge was 6.02% and the largest 14.26%.
Which has lower vig, Fanatics Sportsbook or Fliff?
Fanatics Sportsbook — Fanatics Sportsbook measures 4.75% overall and Fliff measures 6.23% over 30 days of live lines. The per-market and per-sport breakdown is in the table above.
Does this mean I can make money betting both?
Not automatically. These are measurements of past disagreements at the moment they were detected. Lines move within minutes, displayed prices may not be available at your stake, both books must be accessible in your state, and neither book has to honor a stale price. ArbMonster shows the math; the execution and the risk are yours.
Which sports do Fanatics Sportsbook and Fliff disagree on most?
MLB (25 game-markets, avg 6.03%); NFL (3 game-markets, avg 5.93%).
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