Some Dodger-Giant notes from ESPN.com's research department:Just 12 days after turning 23, Clayton Kershaw will be the fifth-youngest opening day starter for the Dodgers since moving to Los Angeles in 1958. He’s the youngest since Fernando Valenzuela in 1983. He’s also the first lefty since Valenzuela in 1988. Kershaw will be the Dodgers' fifth different opening day starter in the past five years. It’s the first time in the last 90 years that the franchise has had five unique opening day starters in five seasons.Youngest Opening Day StarterLos Angeles Dodgers History (Yrs-Days)1981 Fernando Valenzuela      20-1591958 Don Drysdale             21-2661983 Fernando Valenzuela      22-1551959 Don Drysdale             22-2622011 Clayton Ker