B. J. Bedford was primarily a backstroke swimmer who competed at the 2000 Sydney Olympics, helping the USA win gold in the 4x100 medley relay in world record time. She also won gold in that event at the 1998 World Championships, adding a Worlds bronze in the 100 backstroke at the 1994 World Championships.
Bedford competed internationally for the USA from 1993-2000, winning two gold medals at the Pan Pacific Championships, in the 1993 200 backstroke and the 1999 medley relay. At the 1995 Pan American Games she won three gold medals – both backstroke events and the medley relay, and she also won three gold medals at the World University Games – in the 1991 100 metre backstroke and medley relay, repeating in the 100 back in 1993. She added gold in the 200 backstroke at the 1994 Goodwill Games. Bedford was a seven-time national champion – five in the 100 back, and one each in the 200 backstroke and 50 metre freestyle. She later became known by her married name, Barbara Miller.