LONDON (Agencies) - FIFA president Sepp Blatter apologised on Friday for his "unfortunate comments" on racism in the game but rejected calls to resign as head of world football's governing body. "It hurts and I am still hurting because I couldn't envisage such a reaction," Blatter told the BBC in an interview, admitting he had used "unfortunate words" which he "deeply regretted." "When you have done something which was not totally correct, I can only say I am sorry for all those people affected by my declarations."