Clayton Kershaw, soon to be 30, cannot avoid the slide that is right in front of him. On this Friday afternoon in a park just east of downtown, Kershaw considers this slide, what it might mean in seasons to come, and with a wrench he fastens the blue plastic chute to a ledge of the jungle gym, gives it a shake, confirms its sturdiness, and seems pleased enough. "It's a fun time," he says, meaning the day, spent with Los Angeles Dodgers teammates at Alhambra Park, a cozy patch of green in need of a coat of paint, some bags of fresh concrete and a few turns of a wrench.