Courtside vs MyBookie: where their odds disagree
Over the last 30 days, Courtside and MyBookie quoted the same line at prices that summed to less than 100% on 5 game-markets — a cross-book arbitrage — with an average net edge of 6.41% and a peak of 13.17%. On plain vig, Courtside is the cheaper book of the two. Last disagreement: Sep 16, 2026.
Vig: Courtside vs MyBookie
| Courtside | MyBookie | |
|---|---|---|
| Overall overround | 4.03% | 5.96% |
| Moneyline | 3.58% | 5.14% |
| Spreads | 3.90% | 6.07% |
| Totals | 5.49% | 6.31% |
| NFL | 3.69% | 5.12% |
| MLB | 4.38% | 4.66% |
| MLS | — | 7.92% |
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 Diego Padres @ Colorado Rockies · MLB | moneyline | Colorado Rockies @ Courtside + San Diego Padres @ MyBookie | 11.80% | Sep 15, 9:18 PM ET |
| Milwaukee Brewers @ Pittsburgh Pirates · MLB | moneyline | Milwaukee Brewers @ MyBookie + Pittsburgh Pirates @ Courtside | 1.34% | Sep 15, 8:01 PM ET |
| Chicago White Sox @ Cleveland Guardians · MLB | moneyline | Chicago White Sox @ Courtside + Cleveland Guardians @ MyBookie | 8.04% | Sep 15, 8:01 PM ET |
| Detroit Tigers @ Toronto Blue Jays · MLB | moneyline | Detroit Tigers @ Courtside + Toronto Blue Jays @ MyBookie | 1.31% | Sep 14, 8:00 PM ET |
| Dallas Cowboys @ New York Giants · NFL | spread 7.5 | Dallas Cowboys @ Courtside + New York Giants @ MyBookie | 13.17% | Sep 13, 11:23 PM ET |
Frequently asked questions
How often do Courtside and MyBookie disagree?
In the last 30 days our scanner recorded 5 game-markets where Courtside and MyBookie quoted the same line at prices whose implied probabilities summed to less than 100% — a cross-book arbitrage — across 6 scans. The average net edge was 6.41% and the largest 13.17%.
Which has lower vig, Courtside or MyBookie?
Courtside — Courtside measures 4.03% overall and MyBookie measures 5.96% 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 Courtside and MyBookie disagree on most?
MLB (4 game-markets, avg 5.05%); NFL (1 game-markets, avg 13.17%).
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