2 of the 12 Horizon League athletic departments covered by Whistle (17%) use Opendorse, the nIL marketplace and disclosure, as of 4 Nov 2026: Oakland University, Youngstown State University. Across all 1,085 covered NCAA departments, 83 use Opendorse (8%), so the Horizon League is above the national adoption rate. Among nil vendors detected in the Horizon League, Opendorse ranks No. 2 of 2.
Data as of 4 Nov 2026.
Source: automated detection on each Horizon League department's public athletics website, vendor partner pages, job postings and staff titles, medium or higher confidence only; 12 covered Horizon League schools, 1,085 covered NCAA schools in total.
| School | Division | Location | Tracked staff positions | Directory last read |
|---|---|---|---|---|
| Oakland University | Division I | Rochester Hills, Michigan | 109 | 2026-11-02 |
| Youngstown State University | Division I | Youngstown, Ohio | 148 | 2026-11-01 |
Vendors in the same category detected at covered Horizon League departments. A school can appear under more than one vendor when it runs, say, one system for season tickets and another for single-game sales.
| Vendor | Horizon League schools | Share of covered schools |
|---|---|---|
| INFLCR | 2 | 17% |
| **Opendorse** | 2 | 17% |
A school is listed when its public athletics website, a vendor partner page, a job posting or a staff title references Opendorse with at least medium confidence. Detection is automated and re-run as directories refresh: absence means not detected, not not used, and contracts change, so confirm with the department before relying on a single listing.
This page is published when at least 2 covered Horizon League schools use the vendor; smaller combinations are kept out of search indexes. The conference's own page is Horizon League Athletics Staff Directory; every Opendorse school nationally is on Which colleges use Opendorse?.
2 of the 12 covered Horizon League athletic departments (17%) as of 4 Nov 2026: Oakland University, Youngstown State University.
17% of covered Horizon League schools use Opendorse against 8% of all 1,085 covered NCAA athletic departments.
The nil staff listed in each department's directory. Whistle shows their names, titles, emails and phones (where published) on paid plans, with alerts when the role changes hands.
From the staff directories athletic departments publish on their official websites, read automatically on a rolling schedule (NCAA Division I roughly weekly, Division II and III every three to four weeks). Whistle never publishes names, emails or phone numbers on public pages; staff can remove their details at any time at gowhistle.io/remove-my-info.