Greinke sustained the injury when Padres outfielder Carlos Quentin slammed him in the left shoulder as he charged the mound. Greinke had struck Quentin in the shoulder with a pitch.
"[Quentin] should not play a game until Greinke can pitch," Dodgers skipper Don Mattingly said. "If he plays before Greinke pitches, something is wrong. Their guy charges the mound being an idiot, and our guy is going to be out for however long and their guy is probably going to be playing in three days. It's a joke."
Injuries suffered in melees aren't unprecedented.
•: On May 20, 1976, Red Sox pitcher Bill Lee tore ligaments in his left shoulder when Yankees third baseman Graig Nettles pinned him to the ground to prevent Lee from joining a skirmish near home plate, where New York outfielder Lou Piniella had plowed over Boston catcher Carlton Fisk. Lee missed about eight weeks of action and -- after three consecutive seasons with 17 wins -- tallied only five victories during the '76 campaign. He had more than 10 wins in a season just once across the final seven years of his career.
• Amid an August 2010 fracas, Reds hurler Johnny Cueto kicked Cardinals catcher Jason LaRue in the head. LaRue, then 36 years old, suffered a concussion and was subsequently placed on the 60-day disabled list. He never played again. Cueto earned a seven-game suspension.
• Royals first baseman Mike Sweeney was shelved for five games in August 2001 after jamming his wrist and hurting his knuckles following an altercation with Tigers pitcher Jeff Weaver. After being sidelined for five contests, Sweeney proceeded to serve a 10-game ban.
• Yankees slugger Darryl Strawberry emerged from a clash with the Orioles at Yankee Stadium in 1998 with a sore hand and bloodied mouth after he socked Baltimore closer Armando Benitez as players from both teams spilled into the visitors' dugout. Strawberry recovered during his ensuing three-game suspension.
• Perhaps the most notorious on-field tussle involved Hall of Fame pitcher Juan Marichal and catcher Johnny Roseboro in 1965. To retaliate for Marichal beaning a pair of Roseboro's teammates earlier in the affair, the backstop returned pitches by whizzing them close to Marichal's face. Marichal responded by whacking Roseboro in the head multiple times with a bat, planting a fresh wound on the catcher's face. Remarkably, Roseboro returned to the lineup three days later.
Greinke isn't expected to heal so quickly. The Dodgers anticipate their offseason addition will miss six to eight weeks.
"Now we're trying to win and one of our aces has a broken collarbone," said Dodgers utility man Jerry Hairston Jr. "It's unacceptable."