The Irving Oil 100 at Peterborough Speedway took place on Saturday, July 29, 2023, the fifth race of the 2023 Ontario Sportsman Series season, following the cancellation of the Akal Steel 100 at Delaware due to weather. In 2022, the race at Peterborough provided a chaotic, incident filled event which led to a first time winner in Kevin Trevellin. The 2023 version of the race would be no different! The day started off with a new polesitter, as Brendan Patrick would score his first ever WMI Pole Award! Connor James continued his hot streak in second, with Michael Hryniuk Jr. and Doug Cathcart lining up in row two. The green flag flew and it was the pilot of the #02 Dmac Automation Ltd. Chevy leading the way. Unfortunately, a part broke on the #15 Alison Martel Realty Chevy of Michael Hryniuk Jr., on lap fifteen, resulting in the car being taken off via two tow trucks, ending the night for them. Contact was aplenty, with Chad McGlynn, Kevin Trevellin, Mark Patrick, Sean Mangin all taking turns bumping and banging. Brendan Patrick would lead until Connor James took over the lead just before halfway in the 100 lapper. A quick spin meant another caution and ultimately, disaster for the #4 Airedale Carries Inc. team, as Connor James’s engine would fail on the restart, resulting in a check up,causing damage to multiple cars. Tim Tolton would be the man for the next bulk of the race, taking his Speedy Auto Service-Guelph, John’s Towing Chevy Monte Carlo to the front! Tim, a forty year veteran of motorsports this year hasn’t had a ton of luck for the Black Magic Team this year, but he was showing the cars strength, streaking away from Patrick and Amanda Balson, who was driving as a guest driver for Cory McAllister. In the closing laps, contact between Sean Mangin and Mark Patrick resulted in a huge crash for the #12 Delaware Pump & Parts Ltd Chevy. The car would spin into the inside wall so hard it caused some damage to the wall itself. Mark was okay, but the car was not. Following a brief red flag for cleanup, Tolton and Brad Robinson would lead the field back to the green with under ten to go. On the restart, Patrick dove under Robinson for second, and chased after Tolton. With five laps to go, Patrick sent his car into turn one, and made contact with the back of Tolton’s #3, sending it sideways and up the track. Brendan would slide underneath and scoot away to score his first career OSS victory. Brad Robinson would score his best career finish in second, over Chad McGlynn who passed Kevin Trevellin at the line for third. Tolton would lose ground and fall to fifth on the finish. After the fifth round, Connor James loses his points lead to Chad McGlynn and falls to second. Cory McAllister and Brendan Patrick now tie for third and Michael Hryniuk Jr. sits fifth. The OSS returns to action August 12th at Full Throttle Motor Speedway for its second trip this season.