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Ontario Sires Stakes

Ontario Sires Stakes


The Ontario Sires Stakes (OSS) Program was established over 40 years ago, in 1974 to promote the breeding of Standardbred horses in Ontario. This program provides economic incentives for breeders, owners and trainers to breed, buy and race horses in Ontario. Horses eligible for this program are the best racing horses that Ontario has to offer! You can see these horses race throughout the tracks in Ontario within their respective division. The OSS is part of the Standardbred (SIP) component of Ontario’s Horse Improvement Program (HIP), established in 1968.

Below you will find the complete schedule of races along with the benefits, eligibility criteria and registration forms to the Ontario Sires Stakes Program.


OSS Statics

OSS 2019 Leading Stallions (Pacers and Trotters)

OSS 2019 Leading Money Earners

OSS 2019 Leading Sires (All Divisions)

OSS 2019 Gold Series Leaders

OSS 2019 Grassroots Leaders


Latest News & Info

OSS (Sustained March 16, 2020) Horses To Race As 2-Year-Olds in 2020)

OSS (Sustained February 18, 2020) Horses To Race As 3-Year-Olds in 2020

OSS Registered Stallions for 2020 Breeding Season


Ontario Sires Stakes Schedules

Come out and witness the excitement of Ontario’s finest horses which are among the best in the world. The OSS program consistently produces world class racehorses, and the program is renowned across North America. Watch these horses compete for the honour of becoming Sires Stakes Champions.

The highly regarded and lucrative Ontario Sires Stakes (OSS) program will once again showcase some of the province’s very best pacers and trotters, as they compete in numerous Gold and Grassroots Series events at racetracks across Ontario in 2020.

Check in with ontariosiresstakes.com and ontarioracing.com for race dates, updates, news and results, and to learn more about the leading sires stakes program in North America.

View the full 2020 Ontario Sires Stakes Standardbred Schedule here: 
Revised 2020 OSS Schedule

View the full 2020 Prospect Series Stakes Standardbred Schedule here:
Revised 2020 Prospect Series Schedule

Information & Highlights

What is... Ontario Sired?

Definition: A horse that is the offspring of a recognized ONTARIO SIRE shall be eligible to be registered as ONTARIO SIRED and thereby eligible to be nominated to the ONTARIO SIRES STAKES. A horse does not need to be foaled in Ontario to be registered as ONTARIO SIRED. A horse can be both ONTARIO SIRED and ONTARIO BRED and be eligible for incentives attached to each status.


Ontario Sired Benefits

The Ontario Sires Stakes Program is a series of races for 2- and 3-year-old horses sired by eligible ONTARIO SIRES and nominated and sustained to the Ontario Sires Stakes Program. Benefits include:

Benefits for Breeders 

  • Ontario Bred Rewards
    Ontario Bred Rewards are paid to the owners/lessees that enrolled the mare in the Ontario Resident Mare Program for that foaling year. Ontario Bred Rewards on OSS earnings are capped at $1M. Ontario Bred Rewards for selected Open Stakes are capped at $130K with an individual cap of 20% of Open Stakes earnings per horse. These Rewards will be paid on a pro-rata basis in January of the following year.
  • Enhanced Breeders’ Rewards 
    Under the Breeders’ Enhancement Program, administered by the Standardbred Breeders of Ontario Association (SBOA), breeders will receive approximately $3M per year from 2015 to 2018 in various breeders’ incentives. Foals must be both ONTARIO SIRED and ONTARIO BRED to benefit from this program. Additional information can be found at www.standardbredbreeders.com or by calling 519 833-2861. 

Benefits for Owners

  • OSS Purses
    Ontario Sires Stakes purses are estimated to be approximately $13M in 2018.

Eligibility for the Ontario Sires Stakes Program

To be eligible to the OSS, foals must be sired by a stallion standing in Ontario and registered with the OSS Program for the breeding year. A nomination payment is due in the horse’s yearling year. To maintain its eligibility, sustaining payments are due in the two- and three-year-old seasons if the horse is expected to race in the OSS.


  • Stallion Owners (or Stallion Lessees) must hold a current, valid AGCO licence, register the stallion with the Program as an ONTARIO SIRE for each breeding season in which he is eligible, and pay all fees required to register. The deadline for applying to register a stallion without a penalty is January 15th of the breeding year. A stallion must be owned or leased by an Ontario resident to be registered with the Program.
  • Owners of Ontario Sires Stakes Eligible Horses must nominate and sustain the eligible yearlings, two-year-olds or three-year-olds with the Program, and meet all eligibility requirements.

Current Program Criteria may be viewed and downloaded here

Complete Program information, including deadlines, season standings, race results, leaderboards and notices may be found at www.ontariosiresstakes.com.

Forms Registration

2020 Standardbred Stallion Registration Form
2020 Standardbred Stallion Conditions

Ontario Sires Stakes Program forms should be submitted with all required payments to:

Ontario Sires Stakes
Ontario Racing
c/o Woodbine Mohawk Park
PO Box 160
Campbellville ON L0P 1B0

Website: Ontario Sires Stakes


For complete information, please refer to the Standardbred Improvement Program Criteria Book or,

Contact: OSS Administration Coordinator | 519-369-3545 | records@ontariosiresstakes.com

The Ontario Resident Mare Program & Ontario Sire Stakes Program are administered by Ontario Racing