Courtside vs Fanatics Sportsbook: where their odds disagree
Over the last 30 days, Courtside and Fanatics Sportsbook quoted the same line at prices that summed to less than 100% on 4 game-markets — a cross-book arbitrage — with an average net edge of 2.46% and a peak of 4.94%. On plain vig, Courtside is the cheaper book of the two. Last disagreement: Sep 19, 2026.
Vig: Courtside vs Fanatics Sportsbook
| Courtside | Fanatics Sportsbook | |
|---|---|---|
| Overall overround | 4.03% | 4.75% |
| Moneyline | 3.58% | 4.54% |
| Spreads | 3.90% | 4.91% |
| Totals | 5.49% | 4.80% |
| NFL | 3.69% | 4.65% |
| MLB | 4.38% | 4.87% |
| NBA | — | 4.64% |
| NHL | — | 4.73% |
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 | total 7.5 | Over @ Courtside + Under @ Fanatics Sportsbook | 3.45% | Sep 19, 12:39 AM ET |
| San Francisco Giants @ St. Louis Cardinals · MLB | spread 6.5 | San Francisco Giants @ Courtside + St. Louis Cardinals @ Fanatics Sportsbook | 1.13% | Sep 15, 10:50 PM ET |
| Baltimore Orioles @ New York Mets · MLB | moneyline | Baltimore Orioles @ Courtside + New York Mets @ Fanatics Sportsbook | 4.94% | Sep 15, 7:46 PM ET |
| New Orleans Saints @ Detroit Lions · NFL | moneyline | Detroit Lions @ Fanatics Sportsbook + New Orleans Saints @ Courtside | 0.32% | Sep 13, 3:17 PM ET |
Frequently asked questions
How often do Courtside and Fanatics Sportsbook disagree?
In the last 30 days our scanner recorded 4 game-markets where Courtside and Fanatics Sportsbook quoted the same line at prices whose implied probabilities summed to less than 100% — a cross-book arbitrage — across 4 scans. The average net edge was 2.46% and the largest 4.94%.
Which has lower vig, Courtside or Fanatics Sportsbook?
Courtside — Courtside measures 4.03% overall and Fanatics Sportsbook measures 4.75% 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 Fanatics Sportsbook disagree on most?
MLB (3 game-markets, avg 3.17%); NFL (1 game-markets, avg 0.32%).
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