Career comparison between Clayton Kershaw and Sandy Koufax : r/Dodgers
As Clayton Kershaw makes his 200th start, what the Sandy Koufax comparisons mean, by Jon Weisman
Koufax 4 year peak vs Kershaw 4 year peak : r/mlb
Comparing greatness: Kershaw vs. Koufax - ESPN - SweetSpot- ESPN
Does anybody think that Sandy Koufax had the best five year peak of any pitcher in the live ball era (since 1920)? - Quora
Replace the win - Beyond the Box Score
Every team's best gem ever -- Koufax tops Kershaw for Dodgers' spot - ESPN
Is Kershaw the worst great pitcher in postseason history? - Baseball Egg
Through his first 250 starts, Clayton Kershaw has been better than Sandy Koufax. : r/baseball
Sandy Koufax, best left-handed pitchers in MLB