SAN DIEGO -- San Diego Padres slugger Carlos Quentin rushed the mound and wrestled Los Angeles Dodgers right-hander Zack Greinke to the ground after getting hit by a pitch Thursday night, leading to a benches-clearing brawl between the teams that left Greinke with a broken left collarbone.

After he was plunked on the left shoulder in the sixth inning, Quentin started walking toward the mound. Greinke appeared to say something, and Quentin then charged the 2009 AL Cy Young Award winner.

Dodgers outfielder Matt Kemp (left) and Padres pitcher Clayton Richard have their hands on each other after Kemp confronted Carlos Quentin in the tunnel walk-way exiting Petco Park following Thursday's game. AP Photo/Lenny Ignelzi

They dropped their shoulders and collided, and Quentin tackled the pitcher to the grass. Both ended up on the bottom of a huge scrum as players from both sides ran onto the field and jumped in. Greinke lowered his left (non-throwing) shoulder into Quentin and took the brunt of the blow as they collided.

"I never hit him on purpose," said Greinke, who had his left arm in a sling and appeared shaken after the game. "I never thought about hitting him on purpose. He always seems to think that I'm hitting him on purpose, but that's not the case. That's all I can really say about it."

Asked if there was bad blood between the teams, Greinke, who twice hit Quentin with pitches when they were in the American League, said: "Now there probably is. I don't know if there was beforehand."

He said the injury was "awful. It's silly that something could happen like that. I'm disappointed."