Date
Champions
Opponents
Score, Location

World Boxing Association
2008-01-19
CHAGAEV Ruslan
SKELTON Matt
Unanimous Decision 12/12
Dusseldorf, Germany
Ruslan Chagaev was declared as champion in recess in summer 2008 after he injured his leg before rematch with Nikolai Valuev.
2007-04-14
CHAGAEV Ruslan
VALUEV Nikolay
Majority Decision 12/12
Stuttgart, Germany
2007-01-20
VALUEV Nikolay
MCCLINE Jameel
Referee Technical Decision 3/12
Basel, Switzerland
2006-10-07
VALUEV Nikolay
BARRETT Monte
Technical Knockout 11/12
Rosemont, USA
2006-06-03
VALUEV Nikolay
BECK Owen
Technical Knockout 3/12
Hannover, Germany
2005-12-17
VALUEV Nikolay
RUIZ John
Majority Decision 12/12
Berlin, Germany
2005-04-30
RUIZ John
TONEY James
No Decision 12/12
New York, USA
2004-11-13
RUIZ John
GOLOTA Andrew
Unanimous Decision 12/12
New York, USA
2004-04-17
RUIZ John
OQUENDO Fres
Technical Knockout 11/12
New York, USA
2003-12-13
RUIZ John
(interim champion)
RAHMAN Hasim
Unanimous Decision 12/12
Atlantic City, USA
John Ruiz was upgrated to regular WBA heavyweight champion after Roy Jones relinquished the title and went down to light heavyweight division.