Courtside vs DraftKings: where their odds disagree
Over the last 30 days, Courtside and DraftKings quoted the same line at prices that summed to less than 100% on 6 game-markets — a cross-book arbitrage — with an average net edge of 4.14% and a peak of 11.98%. On plain vig, Courtside is the cheaper book of the two. Last disagreement: Sep 20, 2026.
Vig: Courtside vs DraftKings
| Courtside | DraftKings | |
|---|---|---|
| Overall overround | 4.02% | 4.55% |
| Moneyline | 3.59% | 4.29% |
| Spreads | 3.90% | 4.66% |
| Totals | 5.38% | 4.69% |
| NFL | 3.68% | 4.57% |
| MLB | 4.43% | 4.70% |
| NBA | — | 4.58% |
| NHL | — | 4.33% |
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 |
|---|---|---|---|---|
| Miami Dolphins @ San Francisco 49ers · NFL | total 41.5 | Over @ DraftKings + Under @ Courtside | 3.72% | Sep 20, 6:57 PM ET |
| Jacksonville Jaguars @ Denver Broncos · NFL | total 33.5 | Over @ DraftKings + Under @ Courtside | 3.12% | Sep 20, 6:57 PM ET |
| Minnesota Vikings @ Chicago Bears · NFL | total 12.5 | Over @ DraftKings + Under @ Courtside | 3.29% | Sep 20, 3:56 PM ET |
| Chicago White Sox @ Cleveland Guardians · MLB | moneyline | Chicago White Sox @ DraftKings + Cleveland Guardians @ Courtside | 11.98% | Sep 15, 9:33 PM ET |
| San Francisco Giants @ St. Louis Cardinals · MLB | moneyline | San Francisco Giants @ DraftKings + St. Louis Cardinals @ Courtside | 0.39% | Sep 15, 8:47 PM ET |
| Miami Dolphins @ Las Vegas Raiders · NFL | total 40.5 | Over @ DraftKings + Under @ Courtside | 2.36% | Sep 13, 7:35 PM ET |
Frequently asked questions
How often do Courtside and DraftKings disagree?
In the last 30 days our scanner recorded 6 game-markets where Courtside and DraftKings 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 4.14% and the largest 11.98%.
Which has lower vig, Courtside or DraftKings?
Courtside — Courtside measures 4.02% overall and DraftKings measures 4.55% 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 DraftKings disagree on most?
NFL (4 game-markets, avg 3.12%); MLB (2 game-markets, avg 6.19%).
← all sportsbooks · Courtside · DraftKings · what arbitrage is · dutching calculator