SAN FRANCISCO -- Buster Posey was carted through a tunnel at AT&T Park on Thursday, a makeshift cast covering his left ankle and no emotion on his face.
Not exactly the exit the cornerstone of the World Series champion Giants wanted this season.
A night after Florida's Scott Cousins crashed into him at home plate, San Francisco's star catcher was put on the disabled list with a fractured bone in his lower left leg.
Posey has a broken fibula and severely strained ligaments in his left ankle and will miss at least six to eight weeks, Giants head trainer Dave Groeschner told the San Francisco Chronicle. Posey will need surgery on his ankle, Groeschner said, and it is possible a screw could be inserted.
"The fracture will be fine," said Groeschner. "The ankle injury is most concerning to us."
The Giants will try to get Posey into surgery within a week, and recovery time is usually about two months, the Chronicle reported.
"You just don't replace a guy like Buster Posey," said Giants manager Bruce Bochy, a former catcher who was so stricken by the news he called on Major League Baseball to review rule changes for collisions at the plate.
As word spread throughout the Giants clubhouse, players began to come to grips with what Posey's injury meant.
The normally blaring speakers near bearded closer Brian Wilson's locker were uncharacteristically silent. Televisions were turned off. No one was playing dominoes or card games.
Hard to imagine a more important position player than Posey to replace.
Posey has been San Francisco's cleanup hitter, a team leader in the clubhouse and key cog behind the plate for one of baseball's best rotations. The reigning NL Rookie of the Year was batting .284 with four home runs and 21 RBIs, just finding his groove in the midst of a 13-game hitting streak to move the Giants into first place in the NL West.
"It's part of baseball, I understand that, guys running into catchers. Being a catcher, I've been in a few of them. You're in harm's way there," Bochy said. "I think we do need to consider changing the rules here a little bit because the catcher is so vulnerable and there's so many who have gotten hurt. And not just a little bit, had their careers ended or shortened. And here's a guy who's very popular in baseball. Fans want to see him play.
"Now he's out for a while."
The loss of Posey will be an enormous hurdle for the Giants to overcome if they want to repeat as the World Series champion.
"I'm not going to try and be Buster Posey," Whiteside said. "That's our cleanup hitter and one of the best hitters in baseball. I'll do my best and play my game, but I'm not going to try to be Buster Posey."
All of this follows San Francisco's spirited four-run rally in the ninth to force extra innings a night earlier.
The play started when Emilio Bonifacio hit a shallow fly ball to right-center off Guillermo Mota for the second out in the 12th inning. Cousins tagged from third base on the sacrifice fly, beating the throw from Nate Schierholtz and lowering his shoulder to slam into Posey for a clean hit on the catcher. Cousins was safe as Posey never could quite corral the ball, giving Florida a 7-6 victory.
Cousins, who went to the University of San Francisco, lives in the Bay Area and had almost a dozen friends and family in attendance, apologized repeatedly for injuring Posey. But he said he believes -- as most Giants also reiterated -- that he made a clean baseball play.
Cousins was even more remorseful when he heard the severity of the injury before the series finale, saying he had to look away from the replay that was shown repeatedly at the team's hotel. He said he tried calling Posey twice overnight and sent his condolences to the Giants clubhouse.
"The last thing I wanted to do was break a guy's leg," he said, tears welling up in his eyes.
The moment was as stunning as any San Francisco has seen this season.
Posey laid in the dirt around home plate, dazed, writhing in pain and curling up in a ball. After several minutes of stunned silence at AT&T Park, fans began chanting "Posey! Posey!" as he was helped off the field by two team trainers holding his left leg.
Posey had already taken several hard foul tips off his mask and legs this season, even leaving one game for precautionary reasons to make sure he didn't have a concussion. Some observers have argued a slugger of his caliber shouldn't be behind the plate, where hits can be routine, and this injury surely won't do much to quiet that sentiment.
Posey himself has always shaken off those remarks, saying he was born to play catcher and loves his position.
Bochy shook off questions that Posey should switch to another position -- he played some first base last year -- in the future, saying it's too early to be talking about such plans.
"Right now," Bochy said, "we're just trying to get over the shock of this a little."
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 said he spoke with the players' union about the play.
"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."
ESPN The Magazine's Buster Olney and The Associated Press contributed to this report.