sentences:  Ruiz lost a rematch for the vacant WBA Heavyweight title with Valuev on August 30, 2008, once again in controversial fashion.After Lennox Lewis defeated Evander Holyfield for the undisputed (WBA, WBC, and IBF) heavyweight title in late 1999, the WBA ordered Lewis to defend the title against mandatory challenger Ruiz, but Lewis refused.Though he had been undefeated since a loss against David Tua in 1996, the level of competition Ruiz had been facing was suspect and the only name he had beaten (to date) was a nearly 40-year-old Tony Tucker.