betPARX vs Hard Rock Bet: where their odds disagree
Over the last 30 days, betPARX and Hard Rock Bet quoted the same line at prices that summed to less than 100% on 53 game-markets — a cross-book arbitrage — with an average net edge of 3.05% and a peak of 14.04%. On plain vig, Hard Rock Bet is the cheaper book of the two. Last disagreement: Sep 19, 2026.
Vig: betPARX vs Hard Rock Bet
| betPARX | Hard Rock Bet | |
|---|---|---|
| Overall overround | 5.24% | 4.63% |
| Moneyline | 4.76% | 4.19% |
| Spreads | 5.08% | 5.07% |
| Totals | 5.66% | 4.63% |
| NFL | 4.89% | 4.57% |
| MLB | 5.31% | 3.86% |
| NBA | 4.84% | — |
| NHL | 5.13% | 5.33% |
| 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 |
|---|---|---|---|---|
| Milwaukee Brewers @ Baltimore Orioles · MLB | total 10.5 | Over @ betPARX + Under @ Hard Rock Bet | 1.23% | Sep 18, 8:34 PM ET |
| Kansas City Royals @ Houston Astros · MLB | spread 1.5 | Houston Astros @ Hard Rock Bet + Kansas City Royals @ betPARX | 10.60% | Sep 16, 8:59 PM ET |
| Chicago White Sox @ Cleveland Guardians · MLB | moneyline | Chicago White Sox @ Hard Rock Bet + Cleveland Guardians @ betPARX | 4.56% | Sep 16, 3:09 PM ET |
| Detroit Tigers @ Toronto Blue Jays · MLB | total 11.5 | Over @ betPARX + Under @ Hard Rock Bet | 6.20% | Sep 15, 10:04 PM ET |
| Seattle Mariners @ Los Angeles Angels · MLB | spread 2.5 | Los Angeles Angels @ Hard Rock Bet + Seattle Mariners @ betPARX | 2.52% | Sep 14, 10:17 PM ET |
| Chicago White Sox @ Cleveland Guardians · MLB | spread 4.5 | Chicago White Sox @ betPARX + Cleveland Guardians @ Hard Rock Bet | 0.31% | Sep 14, 9:32 PM ET |
| Kansas City Royals @ Boston Red Sox · MLB | spread 2.5 | Boston Red Sox @ betPARX + Kansas City Royals @ Hard Rock Bet | 0.31% | Sep 13, 7:50 PM ET |
| Green Bay Packers @ Minnesota Vikings · NFL | moneyline | Green Bay Packers @ betPARX + Minnesota Vikings @ Hard Rock Bet | 6.12% | Sep 13, 5:03 PM ET |
| Los Angeles Dodgers @ Miami Marlins · MLB | spread 3.5 | Los Angeles Dodgers @ Hard Rock Bet + Miami Marlins @ betPARX | 3.10% | Sep 13, 3:32 PM ET |
| Seattle Mariners @ Athletics · MLB | total 20.5 | Over @ Hard Rock Bet + Under @ betPARX | 8.98% | Sep 13, 12:32 AM ET |
| Philadelphia Phillies @ Atlanta Braves · MLB | total 14.5 | Over @ Hard Rock Bet + Under @ betPARX | 7.62% | Sep 12, 9:45 PM ET |
| Seattle Mariners @ Athletics · MLB | moneyline | Athletics @ betPARX + Seattle Mariners @ Hard Rock Bet | 3.19% | Sep 12, 12:51 AM ET |
| Texas Rangers @ Arizona Diamondbacks · MLB | moneyline | Arizona Diamondbacks @ Hard Rock Bet + Texas Rangers @ betPARX | 0.76% | Sep 11, 11:34 PM ET |
| Houston Astros @ Tampa Bay Rays · MLB | moneyline | Houston Astros @ Hard Rock Bet + Tampa Bay Rays @ betPARX | 1.64% | Sep 11, 7:45 PM ET |
| Kansas City Royals @ Boston Red Sox · MLB | spread 1.5 | Boston Red Sox @ Hard Rock Bet + Kansas City Royals @ betPARX | 0.57% | Sep 11, 6:13 PM ET |
Frequently asked questions
How often do betPARX and Hard Rock Bet disagree?
In the last 30 days our scanner recorded 53 game-markets where betPARX and Hard Rock Bet quoted the same line at prices whose implied probabilities summed to less than 100% — a cross-book arbitrage — across 56 scans. The average net edge was 3.05% and the largest 14.04%.
Which has lower vig, betPARX or Hard Rock Bet?
Hard Rock Bet — betPARX measures 5.24% overall and Hard Rock Bet measures 4.63% 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 Hard Rock Bet disagree on most?
MLB (52 game-markets, avg 2.99%); NFL (1 game-markets, avg 6.12%).
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