In addition to the match fixing that is committed by players, coaches and/or team officials, it is not unheard of to have results manipulated by corrupt referees. Since 2004, separate scandals have erupted in prominent sports leagues in Portugal, Germany (Bundesliga scandal), Brazil (Brazilian football match-fixing scandal) and the United States (see Tim Donaghy scandal), all of which concerned referees who fixed matches for gamblers. Many sports writers have speculated that in leagues with high player salaries, it is far more likely for a referee to become corrupt since their pay in such competitions is usually much less than that of the players.