betPARX vs FanDuel: where their odds disagree
Over the last 30 days, betPARX and FanDuel quoted the same line at prices that summed to less than 100% on 83 game-markets — a cross-book arbitrage — with an average net edge of 3.96% and a peak of 14.58%. On plain vig, FanDuel is the cheaper book of the two. Last disagreement: Sep 19, 2026.
Vig: betPARX vs FanDuel
| betPARX | FanDuel | |
|---|---|---|
| Overall overround | 5.24% | 4.58% |
| Moneyline | 4.76% | 4.00% |
| Spreads | 5.08% | 4.84% |
| Totals | 5.66% | 4.90% |
| NFL | 4.89% | 4.57% |
| MLB | 5.31% | 4.56% |
| NBA | 4.84% | 4.50% |
| NHL | 5.13% | 4.85% |
| MLS | 6.46% | — |
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 |
|---|---|---|---|---|
| San Francisco Giants @ Los Angeles Dodgers · MLB | spread 1.5 | Los Angeles Dodgers @ betPARX + San Francisco Giants @ FanDuel | 0.37% | Sep 19, 12:08 AM ET |
| San Francisco Giants @ Los Angeles Dodgers · MLB | moneyline | Los Angeles Dodgers @ betPARX + San Francisco Giants @ FanDuel | 1.05% | Sep 19, 12:08 AM ET |
| New York Yankees @ Arizona Diamondbacks · MLB | spread 6.5 | Arizona Diamondbacks @ FanDuel + New York Yankees @ betPARX | 0.76% | Sep 18, 11:53 PM ET |
| Toronto Blue Jays @ Texas Rangers · MLB | total 8.5 | Over @ betPARX + Under @ FanDuel | 3.04% | Sep 18, 10:37 PM ET |
| Toronto Blue Jays @ Texas Rangers · MLB | total 9.5 | Over @ betPARX + Under @ FanDuel | 1.18% | Sep 18, 9:51 PM ET |
| Milwaukee Brewers @ Baltimore Orioles · MLB | spread 1.5 | Baltimore Orioles @ FanDuel + Milwaukee Brewers @ betPARX | 0.29% | Sep 18, 9:36 PM ET |
| Kansas City Royals @ Pittsburgh Pirates · MLB | moneyline | Kansas City Royals @ betPARX + Pittsburgh Pirates @ FanDuel | 0.50% | Sep 18, 7:17 PM ET |
| Minnesota Twins @ Los Angeles Angels · MLB | total 7.5 | Over @ FanDuel + Under @ betPARX | 0.36% | Sep 17, 11:51 PM ET |
| Detroit Tigers @ Chicago White Sox · MLB | spread 1.5 | Chicago White Sox @ FanDuel + Detroit Tigers @ betPARX | 6.23% | Sep 17, 10:19 PM ET |
| Boston Red Sox @ Texas Rangers · MLB | spread 2.5 | Boston Red Sox @ FanDuel + Texas Rangers @ betPARX | 0.80% | Sep 17, 9:03 PM ET |
| Seattle Mariners @ Los Angeles Angels · MLB | spread 4.5 | Los Angeles Angels @ FanDuel + Seattle Mariners @ betPARX | 3.67% | Sep 16, 11:46 PM ET |
| Baltimore Orioles @ New York Mets · MLB | spread 4.5 | Baltimore Orioles @ betPARX + New York Mets @ FanDuel | 0.52% | Sep 16, 8:44 PM ET |
| Chicago White Sox @ Cleveland Guardians · MLB | spread 2.5 | Chicago White Sox @ FanDuel + Cleveland Guardians @ betPARX | 1.02% | Sep 16, 3:24 PM ET |
| Miami Marlins @ Arizona Diamondbacks · MLB | moneyline | Arizona Diamondbacks @ betPARX + Miami Marlins @ FanDuel | 2.06% | Sep 14, 10:48 PM ET |
| Los Angeles Dodgers @ Cincinnati Reds · MLB | total 4.5 | Over @ betPARX + Under @ FanDuel | 3.45% | Sep 14, 8:46 PM ET |
Frequently asked questions
How often do betPARX and FanDuel disagree?
In the last 30 days our scanner recorded 83 game-markets where betPARX and FanDuel quoted the same line at prices whose implied probabilities summed to less than 100% — a cross-book arbitrage — across 93 scans. The average net edge was 3.96% and the largest 14.58%.
Which has lower vig, betPARX or FanDuel?
FanDuel — betPARX measures 5.24% overall and FanDuel measures 4.58% 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 betPARX and FanDuel disagree on most?
MLB (82 game-markets, avg 3.98%); NFL (1 game-markets, avg 2.98%).
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