Every new New York business filing, every dayRivals Athletics
Steven J. Probst / Timothy L. Byrnes, Registered Agent
Rivals Athletics is a youth sports training program based in Massapequa, NY, offering basketball-specific training. The LLC filing address (111b Charles St) is a residential location likely for the business owner, while the operating address is 5600 Old Sunrise Hwy, both in Massapequa.
Filed January 11, 2025 · Massapequa, NY · Nassau County
Find new youth sports training businesses in Massapequa, then launch a cold email campaign built for you.
Every new New York filing, every day
See how it worksSource
New York Department of State, Division of Corporations · Entity 7505864 · Retrieved May 17, 2026
About Rivals Athletics
RIVALS BASKETBALL LLC was filed in New York on January 11, 2025, with a principal address in Massapequa. Owners Steven J. Probst and Timothy L. Byrnes filed personally as the registered agent. The company's domain was registered on March 22, 2012, nearly 13 years before the filing, through Squarespace Domains. The website is modern and confirmed to match the filing name and address. We estimate annual revenue between $100,000 and $1 million and 6 to 25 employees, operating from a brick-and-mortar location. No annual report or EIN on file yet.
- Domain registered nearly 13 years before the company was filed.
- Owners Steven J. Probst and Timothy L. Byrnes filed personally as the registered agent.
- We estimate revenue $100,000 to $1 million and 6 to 25 employees, brick-and-mortar.
- Website identity confirmed to match the filing name and address.
- No annual report or EIN on file yet.
Compiled from the state record, the company's public web presence, and our own research; revenue, employee, and footprint figures are estimates, not verified financials. Updated August 23, 2026.
One of 60 new businesses registered in Massapequa in January 2025, and the only youth sports training business registered there that month.
Is this business yours?
It's getting views. Claim the page for free to control what your customers see.
Filing Details
Verified Business Profile
Contact Information
Verified Website Profile
We matched this business to its website and pulled the domain's registration (WHOIS) record. Domain age is one of the strongest signals that a filing is a truly new business and not a re-filing or paperwork change.
Frequently Asked Questions
When was Rivals Athletics registered?
Rivals Athletics was registered as LLC on January 11, 2025 in New York.
Where is Rivals Athletics located?
Rivals Athletics is based in Massapequa, NY, 11758, in Nassau County.
What type of business is Rivals Athletics?
Rivals Athletics is classified as a youth sports training business (basketball training).
Does Rivals Athletics have an EIN on file?
No EIN was found on file for Rivals Athletics at the time of registration.
Who Sells to This Business
Based on the business category, these service providers typically target this type of business.
Turn fresh youth sports training businesses into your next customers
We find newly registered businesses, verify their contact details, and build the campaign. You review everything before anything sends.
Build My Campaign Free ›