Updated

Los Angeles Dodgers pitcher Zack Greinke will undergo surgery Saturday to repair a fractured left collarbone the standout right-hander suffered during a brawl in Thursday's game against the San Diego Padres.

Greinke, who gave up two runs on five hits and one walk while striking out four batters in Los Angeles' 3-2 victory, was injured as a result of a tussle with San Diego left fielder Carlos Quentin in his second start since joining the Dodgers as one of the offseason's most sought-after free agents.

The former American League Cy Young winner is expected to miss eight weeks.

With the Dodgers holding a 2-1 lead in the bottom of the sixth, Greinke threw an inside fastball that hit Quentin in the upper left back area on a 3-2 pitch. Immediately, the two began verbally arguing before both charged at each other.

"I never hit him on purpose," Greinke said after the game." He always seem to think I'm hitting him on purpose, but that's not the case."

Quentin and Greinke collided near the mound and both team's benches cleared, creating a large pile. After umpires and coaches alike attempted to break up the fight, both teams eventually went back to their respected dugouts.

Los Angeles infielder Jerry Hairston and other San Diego players continued to argue with each other and some pushing and confrontation continued yet again.

Play resumed after the fracas lasted roughly 10-plus minutes. Greinke left due to the injury and was not ejected, but Hairston, fellow Dodgers center fielder Matt Kemp, and Quentin were ejected from the game.

Major League Baseball has yet to announce any disciplinary measures for Quentin for the incident.

Dodgers manager Don Mattingly was critical of Quentin's actions when discussing the situation afterward.

"(Quentin) should not play a game until Greinke can pitch," an upset Mattingly said. "He caused the whole thing. Nothing happens if he goes to first base. You know (Greinke's) not throwing at you if it's 3-2. That's zero understanding of baseball."