Ten potential ownership groups hoping to purchase the Dodgers have advanced to the second round of bidding, according to a source. Through multiple sources, five groups are known to have advanced to the second round: -- The group headed by Lakers legend Magic Johnson and largely funded by Guggenheim Partners chief executive officer Mark Walter. -- The group headed by Steve Cohen, the billionaire hedge fund manager and founder of SAC Capital Advisors in Stamford, Conn. -- The group headed by Los Angeles real estate developer Rick Caruso, a group that also includes former Dodgers manager Joe Torre. -- The group headed by Stanley Gold, the chief executive officer of Shamrock Holdings, a private investment company founded by the late Roy E. Disney, with several of Disney's surviving family members also involved in that group. -- The group headed by former Dodgers owner Peter O'Malley, which reportedly has discussed joining the Gold/Disney group but thus far hasn't done so.