The crash happened Friday, July 29, at approximately 8:45 p.m., near Trethewey and Brookhaven roads, west of Black Creek Drive.
According to police, the driver of a motor vehicle was traveling eastbound on Trethewey Drive and turning left onto a residential road when he collided with a motorcyclist heading westbound on Trethewey.
The driver of the motorcycle was rushed to the hospital with serious injuries.
The driver of the motor vehicle remained at the scene
Anyone with information should contact police at 416-808-1900, Crime Stoppers anonymously at 416-222-8477 (TIPS) or www.222tips.com.