Greinke undergoes surgery to repair collarbone

Los Angeles Dodgers pitcher Zack Greinke underwent 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.