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Randy Johnson won his 300th game on Thursday for the San Francisco Giants. Zambrano just turned 28 on Monday, and could reach the goal. But he dismissed it.

"Three hundred? Me?" Zambrano said. "No, I'll be out of here in five years."

How does he know?

"After this contract, I'm done," said Zambrano, who is signed through 2012 with a vesting option for 2013. "I'm serious. I don't want to play. I want to help this team, I want to do everything possible to win with this team, but after five years or four years, or whatever I have left on my contract, I just don't want to play.

"I want to stay home and see my daughters grow up and hang out with my family more," he said. "Do you know how many Mother's Days I spend with my mother? Do you know how many things I've lost in my life?

"It's good to be here, it's good to play baseball -- don't get me wrong," Zambrano said. "But five years, four years, whatever I have left in my contract, I will retire. That's it."