DraftKings vs Fliff: where their odds disagree
Over the last 30 days, DraftKings and Fliff quoted the same line at prices that summed to less than 100% on 29 game-markets — a cross-book arbitrage — with an average net edge of 3.22% and a peak of 10.76%. On plain vig, DraftKings is the cheaper book of the two. Last disagreement: Sep 19, 2026.
Vig: DraftKings vs Fliff
| DraftKings | Fliff | |
|---|---|---|
| Overall overround | 4.54% | 6.23% |
| Moneyline | 4.28% | 5.61% |
| Spreads | 4.66% | 6.49% |
| Totals | 4.69% | 6.50% |
| NFL | 4.57% | 6.07% |
| MLB | 4.65% | 6.13% |
| NBA | 4.58% | — |
| NHL | 4.33% | — |
| 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 |
|---|---|---|---|---|
| Athletics @ Cleveland Guardians · MLB | spread 1.5 | Athletics @ DraftKings + Cleveland Guardians @ Fliff | 8.39% | Sep 18, 8:19 PM ET |
| Detroit Lions @ Buffalo Bills · NFL | total 64.5 | Over @ DraftKings + Under @ Fliff | 3.78% | Sep 17, 11:05 PM ET |
| Detroit Lions @ Buffalo Bills · NFL | moneyline | Buffalo Bills @ Fliff + Detroit Lions @ DraftKings | 0.80% | Sep 17, 9:19 PM ET |
| Los Angeles Dodgers @ Cincinnati Reds · MLB | total 10.5 | Over @ DraftKings + Under @ Fliff | 2.49% | Sep 17, 3:27 PM ET |
| Los Angeles Dodgers @ Cincinnati Reds · MLB | spread 5.5 | Cincinnati Reds @ DraftKings + Los Angeles Dodgers @ Fliff | 2.49% | Sep 17, 3:27 PM ET |
| Atlanta Braves @ Chicago Cubs · MLB | total 12.5 | Over @ DraftKings + Under @ Fliff | 5.61% | Sep 16, 10:30 PM ET |
| Atlanta Braves @ Chicago Cubs · MLB | spread 3.5 | Atlanta Braves @ DraftKings + Chicago Cubs @ Fliff | 5.61% | Sep 16, 10:30 PM ET |
| Atlanta Braves @ Chicago Cubs · MLB | spread 2.5 | Atlanta Braves @ Fliff + Chicago Cubs @ DraftKings | 0.92% | Sep 14, 10:33 PM ET |
| Atlanta Braves @ Chicago Cubs · MLB | moneyline | Atlanta Braves @ Fliff + Chicago Cubs @ DraftKings | 6.12% | Sep 14, 10:33 PM ET |
| Baltimore Orioles @ New York Mets · MLB | total 4.5 | Over @ DraftKings + Under @ Fliff | 0.66% | Sep 14, 9:47 PM ET |
| Detroit Tigers @ Toronto Blue Jays · MLB | spread 3.5 | Detroit Tigers @ DraftKings + Toronto Blue Jays @ Fliff | 0.50% | Sep 14, 8:00 PM ET |
| Atlanta Falcons @ Pittsburgh Steelers · NFL | total 33.5 | Over @ DraftKings + Under @ Fliff | 3.08% | Sep 13, 4:02 PM ET |
| New Orleans Saints @ Detroit Lions · NFL | moneyline | Detroit Lions @ Fliff + New Orleans Saints @ DraftKings | 6.90% | Sep 13, 3:02 PM ET |
| Cincinnati Reds @ Milwaukee Brewers · MLB | total 9.5 | Over @ DraftKings + Under @ Fliff | 1.70% | Sep 11, 8:01 PM ET |
| New York Mets @ Miami Marlins · MLB | total 20.5 | Over @ DraftKings + Under @ Fliff | 0.50% | Sep 9, 9:05 PM ET |
Frequently asked questions
How often do DraftKings and Fliff disagree?
In the last 30 days our scanner recorded 29 game-markets where DraftKings and Fliff quoted the same line at prices whose implied probabilities summed to less than 100% — a cross-book arbitrage — across 29 scans. The average net edge was 3.22% and the largest 10.76%.
Which has lower vig, DraftKings or Fliff?
DraftKings — DraftKings measures 4.54% 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 DraftKings and Fliff disagree on most?
MLB (25 game-markets, avg 3.15%); NFL (4 game-markets, avg 3.64%).
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