Rights of other ex world champions
 one match removed from the title

7/12/2004 -  Mikhail Botvinnik the 6th chess world champion took advantage of automatic rematch clauses when he lost the title to Vassily Smyslov in 1957 by a score of 9.5 - 12.5. Botvinnik got a return match in 1958 and regained his title by defeating Smyslov by a score of 12.5 - 10.5. Botvinnik again took advantage of automatic rematch when he lost to Mikhail Tal in 1960 by a score of  8.5 - 12.5. Botvinnik got a return match in 1961 and regained his title by defeating Mikhail Tal by a score of 13  - 8.  

  

   Anatoly Karpov the 12th world champion took advantage of automatic rematch clause when he lost his title to Garry Kasparov in 1985 by a score of 11 - 13.  Karpov got a rematch in 1986 against Garry Kasparov. Karpov lost the rematch by a score of 11.5 - 12.5. Karpov also took advantage of the rights of an ex challenger of the world title one match remove from the challenge. 
    
  In 1987 Karpov was automatically seeded into the final candidate match against Alexi Sokolov.  Karpov won this match by a score of 7.5-3.5.  Karpov went on to lose his 1987 challenge to World Champion Garry Kasparov by score of 12-12.  In 1990 Karpov again got seeded into the quarterfinal candidates process. Karpov went on to lose his 1990 challenge to World Champion Garry Kasparov by a score of 11.5 - 12.5. 

   In 1993 Karpov again got seed into the quarterfinal candidate process, he lost in the 1993 semifinal candidate match to Nigel Short by a score of 4 - 6. In 1997, Karpov as 1996 FIDE Champion was seeded in the finals of the 1997 FIDE KO Championships. Anand fought his way thru  rounds 2 thru 7 and had to play Karpov in the final. The exhausted Anand lost by a score of 3-5.