Previously that would n't have been considered old in wrestling terms .
This is the modern era , where a 39 - year - old John Cena is considered to be an old timer who is winding down and in the final years of his wrestling career .
Previously that would n't have been considered old in wrestling terms , but this is the modern era , where a 39 - year - old John Cena is considered to be an old timer who is winding down and in the final years of his wrestling career .