Holyfield is expected to win , but Nielson , who last fought in 2002 , promises it wo n't be a walkover .
Former heavyweight champion Holyfield wants to get a world championship lined up , by winning this fight .
champion is expected to win , but Nielson , who last fought in 2002 , promises it wo n't be a walkover .
Former heavyweight champion Holyfield wants to get a world championship lined up , by winning this fight .