Luis Gonzalez is playing the final month of the season knowing that this could be his final stretch in Arizona. "I'm prepared for anything. I really am," Gonzalez said. "I've thought about everything and I've pretty much got to leave the door open for anything." Gonzalez helped define the franchise and is its poster boy for success. But he has only one more year left on his contract, which is to pay him $11.5 million next season, his eighth in Arizona. Now 38 and his power numbers not where they've been, he knows ownership will have to decide if it's best to keep him or try and trade him to free up some money and open a spot in left field for Chad Tracy or prospect Carlos Quentin.