betPARX vs Caesars: where their odds disagree
Over the last 30 days, betPARX and Caesars quoted the same line at prices that summed to less than 100% on 101 game-markets — a cross-book arbitrage — with an average net edge of 3.64% and a peak of 13.63%. On plain vig, betPARX is the cheaper book of the two. Last disagreement: Sep 19, 2026.
Vig: betPARX vs Caesars
| betPARX | Caesars | |
|---|---|---|
| Overall overround | 5.24% | 5.78% |
| Moneyline | 4.76% | 5.12% |
| Spreads | 5.08% | 6.09% |
| Totals | 5.66% | 6.16% |
| NFL | 4.89% | 6.12% |
| MLB | 5.31% | 4.13% |
| NBA | 4.84% | 4.58% |
| NHL | 5.13% | 4.67% |
| 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 @ Caesars | 1.93% | Sep 19, 12:24 AM ET |
| Toronto Blue Jays @ Texas Rangers · MLB | total 7.5 | Over @ betPARX + Under @ Caesars | 12.55% | Sep 18, 10:52 PM ET |
| Washington Nationals @ St. Louis Cardinals · MLB | total 11.5 | Over @ betPARX + Under @ Caesars | 1.23% | Sep 18, 10:06 PM ET |
| Washington Nationals @ St. Louis Cardinals · MLB | spread 8.5 | St. Louis Cardinals @ betPARX + Washington Nationals @ Caesars | 1.40% | Sep 18, 10:06 PM ET |
| Seattle Mariners @ Colorado Rockies · MLB | moneyline | Colorado Rockies @ Caesars + Seattle Mariners @ betPARX | 0.61% | Sep 18, 9:20 PM ET |
| Chicago Cubs @ Cincinnati Reds · MLB | spread 1.5 | Chicago Cubs @ Caesars + Cincinnati Reds @ betPARX | 0.23% | Sep 18, 9:05 PM ET |
| Seattle Mariners @ Colorado Rockies · MLB | spread 4.5 | Colorado Rockies @ betPARX + Seattle Mariners @ Caesars | 1.49% | Sep 18, 8:19 PM ET |
| Minnesota Twins @ Los Angeles Angels · MLB | total 3.5 | Over @ betPARX + Under @ Caesars | 0.85% | Sep 17, 11:20 PM ET |
| Philadelphia Phillies @ New York Mets · MLB | total 3.5 | Over @ Caesars + Under @ betPARX | 0.70% | Sep 17, 9:03 PM ET |
| Milwaukee Brewers @ Pittsburgh Pirates · MLB | spread 3.5 | Milwaukee Brewers @ Caesars + Pittsburgh Pirates @ betPARX | 0.75% | Sep 17, 2:27 PM ET |
| Los Angeles Dodgers @ Cincinnati Reds · MLB | spread 1.5 | Cincinnati Reds @ Caesars + Los Angeles Dodgers @ betPARX | 0.75% | Sep 17, 1:48 AM ET |
| Atlanta Braves @ Chicago Cubs · MLB | total 11.5 | Over @ betPARX + Under @ Caesars | 1.37% | Sep 16, 10:00 PM ET |
| New York Yankees @ Minnesota Twins · MLB | spread 1.5 | Minnesota Twins @ betPARX + New York Yankees @ Caesars | 1.54% | Sep 16, 3:24 PM ET |
| Chicago White Sox @ Cleveland Guardians · MLB | spread 1.5 | Chicago White Sox @ Caesars + Cleveland Guardians @ betPARX | 3.18% | Sep 16, 2:38 PM ET |
| Chicago White Sox @ Cleveland Guardians · MLB | moneyline | Chicago White Sox @ Caesars + Cleveland Guardians @ betPARX | 6.22% | Sep 16, 2:38 PM ET |
Frequently asked questions
How often do betPARX and Caesars disagree?
In the last 30 days our scanner recorded 101 game-markets where betPARX and Caesars quoted the same line at prices whose implied probabilities summed to less than 100% — a cross-book arbitrage — across 106 scans. The average net edge was 3.64% and the largest 13.63%.
Which has lower vig, betPARX or Caesars?
betPARX — betPARX measures 5.24% overall and Caesars measures 5.78% 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 Caesars disagree on most?
MLB (99 game-markets, avg 3.69%); NFL (2 game-markets, avg 1.11%).
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