The Weekly Edge — week of September 14, 2026
The scanner's week, measured: 73,503 detections across 838 markets, watching 3,262 confirmed cross-venue pairs. Every figure is net of all venue fees at order-book-fillable size.
The five biggest opportunities we measured
| Market | Net edge | Measured room |
|---|---|---|
| Texas Rangers @ Arizona Diamondbacks (2026-09-12 01:41 UTC) | 14.95% | $374 at $2,500 |
| Seattle Mariners @ Athletics (2026-09-13 01:41 UTC) | 14.89% | $372 at $2,500 |
| New York Mets @ New York Yankees (2026-09-11 23:06 UTC) | 14.88% | $372 at $2,500 |
| Pittsburgh Pirates @ Chicago Cubs (2026-09-11 18:21 UTC) | 14.78% | $370 at $2,500 |
| Chicago White Sox @ St. Louis Cardinals (2026-09-12 01:25 UT | 14.78% | $370 at $2,500 |
Each was a live, fillable price difference when detected — the dashboard shows current ones in real time.
Cheapest sportsbooks this week (measured overround)
lowvig 3.72% · courtside 4.21% · betanysports 4.30% — full ranking of 20+ books — full table with per-market breakdowns on the venue comparison.
Why gaps like these exist
Two venues price the same outcome independently, and their user bases mostly can't trade both. The difference is measurable — that's what ArbMonster does all day. How it works.
ArbMonster is a data service. Nothing here is financial or betting advice; markets carry risk, venues have age and jurisdiction restrictions, and you are responsible for verifying everything before acting.