An Oakland Athletics season ticket-holder asked a federal court Monday to protect fans from flying bats and balls by ordering Major League Baseball to extend the safety netting at its ballparks the entire length of the foul lines.

The lawsuit filed in the Northern District of California seeks class action status on behalf of all fans buying season tickets in unprotected areas of major league parks. It is not asking for money; instead, it wants Commissioner Rob Manfred to extend the screens that typically cover only a few sections behind the plate so that they run from foul pole to foul pole.

“I think it’s important when you have an issue like this not to monetize it, not to say it’s about people trying to get a bunch of money,” said Steve Berman, a lawyer with the Seattle-based firm of Hagens Berman.