The Mets season may be over, but the team's record of blasting fans in the face with painful displays of incompetence remains unbeaten.

In a new lawsuit, longtime Mets fan/victim Alex Swanson alleges that he was knocked unconscious during a recent home game by a malfunctioning T-shirt cannon fired at close range. The impact allegedly left his "retina dangling by a thread," the Daily News reports.

The incident occurred on June 5th, as the Long Island man was enjoying a rare Mets shutout along with his three sons. As the t-shirt firing squad made its rounds, Swanson says he approached the railing on Pepsi Porch and was smacked in the face by a projectile from just 20 feet away. He recalls the shooter apparently struggling with the gun before aiming it at him.

Swanson was knocked backwards by the force of the balled-up shirt, then struck his head and passed out, the suit claims. He suffered a concussion, he alleges, which has left him with floaters and other symptoms.

Now, the wounded Mets fan wants the cannons banned from Citi Field, as well as unspecified damages. “First and foremost they should stop using that gun,” he told the News. “It bothers me because it could have hit a little kid. I don’t know why they use them anymore.”

The T-shirt cannon was invented in the mid-1990s—about a decade after the Mets won their last World Series—by the Coyote mascot for the San Antonio Spurs. In the years since, the instrument has become both a fan favorite and source of freak accidents.

Back in 2001, a man attending a Long Island Ducks minor league baseball game was chasing down a T-shirt when he fell from a sky box and broke his neck. More recently, a woman sued the Houston Astros for more than $1 million, claiming a careless shirt-shooter broke her finger.

A 2016 study on the dangers of the cannons found that the T-shirts pack about 15 times the kinetic energy of a paintball gun, and nearly half that of a 9mm gun.

A spokesperson for the Mets did not respond to Gothamist's inquiries.