A federal lawsuit filed in San Francisco on Monday is trying to force MLB to install netting from foul pole to foul pole to protect spectators from flying bats and balls.

The lawsuit, filed on behalf of an A's fan and other season-ticket holders throughout the major leagues, does not ask for money. Instead, it wants commissioner Rob Manfred to extend the screens that typically cover only a few sections behind the plate all the way down the first- and third-base lines.