Greene was injured in the first inning, trying to take a throw from catcher Ramon Hernandez as the Dodgers' Cesar Izturis stole second base. The ball took one hop, bounced under Greene's glove, struck his hand and skipped into center field, Izturis taking third on the error charged to Hernandez.
"I was fairly pessimistic (after the play). It hurt right off the bat and it was just in a bad spot," said the 25-year-old Greene, who was hitting .242 with three doubles, four runs scored and five RBIs, coming into the game. "It's frustrating, but I'm just trying to take it in stride."
In an ironic twist to his latest injury, Greene dislocated the index finger on his right hand last Sept. 13, also during a game at Dodger Stadium. He made two pinch-running appearances in the final 18 games of his rookie season.
About both injuries occurring at Dodger Stadium, Greene said: "I think it's just coincidental. I've always felt good (playing) here."
Last year, Greene batted .273 with 31 doubles, 15 homers, 65 RBIs and 67 runs scored and finished second to Pittsburgh's Jason Bay in the voting for the National League's Rookie of the Year.
On Saturday night, Greene came out of the game after the first inning and was immediately sent for preliminary X-rays at the stadium. The film revealed the fracture just above the second knuckle near the middle of the ring finger.
Todd Hutcheson, the team's head trainer, said that it could take longer than three to four weeks for the injury to heal, but that any adjustment in the length of Greene's absence wouldn't be determined until after more X-rays were taken on Monday.
"After we re-evaluate it, and we get better films, we hope to get a better estimate then," Hutcheson said. "Right now we're saying three-to-four weeks. The position of the fracture looks good, but we're only going with the picture that we've gotten. We'll have a better idea on Monday."