B Physics at the Tevatron Run II
  We present the B physics results from the CDF and D{\O} experiments at the Tevatron Run II at Fermilab and their future prospect. This includes various B mass and lifetime measurements, B mixing, the confirmation of the discovery of the X particle, rare decays, CP violation and spectroscopy. 
Kin Yip (for the CDF and D{\O} collaborations)