The similarities of Andrew Cashner and Kerry Wood have when he was young are... Cashner throws his fastball anywhere from 97-100mph and so did Kerry Wood when he came up from the minors. Also, when a pitcher throws the heat like that, it could bring up wildness in throwing the ball and that is happening for Cashner right now and it happen for Wood about 8-10 years ago. When a pitcher throws the ball that fast, they usually overthrow the ball and miss the strike zone. This can pile up a lot of walks as it has for both players in there careers. Another similarity they both have in common, is they both had Tommy John Surgery in there throwing arm. Finally, the last thing they have in common and that I can think of is both look alike in the face as they both have facial hair that looks exactly the same. However, Cashner shaved his facial hair but if you look close, it's starting to come back.
Then there are the differences in Cashner and a young Wood as no two people are alike. Kerry Wood came up to the majors when he was 21 years old, while Andrew Cashner came up to the majors this year at the age of 23. Kerry Wood came up as a starting pitcher and Cashner came up as a relief pitcher. As a rookie, Kerry was a more complete pitcher than Cashner was as he won rookie of the year, while tying the major league record for most strikeouts in a game as he struck out 20. He is tied with a future Hall of Famer, Roger Clemens. The rookie season is still not over for Cashner but he won't in Rookie of the year as relief pitchers never do and he does not pitch much to make a case for the award. If a Cubs player was going to with Rookie of the Year, it would be either SS Starlin Castro or Tyler Colvin who are having a better year.