Before the Giants learned catcher Buster Posey had a broken bone in his lower left leg, his agent had already started lobbying for change.

Posey suffered the injury while blocking home plate in the 12th inning of San Francisco's game against Florida Wednesday night. Last year's NL Rookie of the Year was placed on the disabled list. An MRI confirmed Posey had a fractured left fibula and three torn ligaments in his left ankle, Giants trainer Dave Groeschner said.

Posey's agent, Jeff Berry, said Thursday morning he reached out to Joe Torre, leader of on-field operations for Major League Baseball, and raised the idea of changing the rules regarding plays at the plate. He also spoke with the players' union about the play.

According to sources, the Major League Baseball Players Association has been in contact with Berry, about the concern Berry has expressed about contact plays. The MLBPA will consider internally the discussion, and if the players' leadership decides to pursue more action, it will then reach out to Major League Baseball to discuss changes.

Over time, it is has become accepted practice for catchers to block home plate, and for baserunners to launch themselves into catchers.

"You leave players way too vulnerable," Berry said. "I can tell you Major League Baseball is less than it was before [Posey's injury]. It's stupid. I don't know if this ends up leading to a rule change, but it should. The guy [at the plate] is too exposed.

"If you go helmet to helmet in the NFL, it's a $100,000 fine, but in baseball, you have a situation in which runners are [slamming into] fielders. It's brutal. It's borderline shocking. It just stinks for baseball. I'm going to call Major League Baseball and put this on the radar. Because it's just wrong."

When asked about that type of play, Torre told ESPN Radio's Colin Cowherd simply such scenarios are a long-standing part of baseball that should not be changed.