Rangers designated hitter Vladimir Guerrero says he won't participate in next month's Home Run Derby. "The last time I did it, I went on a streak without hitting a home run," said Guerrero, who went 17 games without a homer to open the second half of the 2007 season. "So I'm not doing it." Texas might still be represented. Nelson Cruz has said he'd be interested in taking part as long as teammate Josh Hamilton isn't in the field.