Soft QCD and the underlying event at CDF

Presented are the latest results of jet fragmentation studies at the Tevatron using the CDF Run II detector. Studies include indirectly global event shapes in collisions, the distribution of transverse momenta (kT) of particles in jets, the underlying event studies and two-particle momentum correlations. Results are compared to parton shower Monte Carlos and recent NLLA calculations as well as earlier experimental results from the Tevatron and e+e− colliders.