 On April 15 , 2009 , Kershaw pitched seven innings , striking out 13 batters while allowing only one hit ( a solo home run ) against the rival San Francisco Giants . He was the youngest Dodger to ever strikeout 13 or more batters in a game since Sandy Koufax did it in the 1955 season . On May 17 , 2009 , Kershaw did not allow a hit against the Florida Marlins through 7 innings , then gave up a lead @-@ off double to Florida 's Cody Ross . In 2009 , despite an 8 – 8 record , he led the major leagues in opposing batting average ( .200 ) , opposing slugging percentage ( .282 ) , and hits per nine innings ( 6 @.@ 26 ) . He also posted an ERA of 2 @.@ 79 and 185 strikeouts . Kershaw also walked 91 batters , which was second most in the National League ( NL ) . 
