Kerry has played with the gang many times before on the forty man roster, but now she is a full-time member of the gang.  The song "ridin dirty" was written about her, because she will catch you ridin dirty, aka stealing second.  Her quick reflexes let her snag foul tips and get important outs for the gang.  Her bat is also solid, she can place the ball just on the thirdbase line right past the 3rd basemen.