Ballon d'Or 2013: Can anyone dethrone Lionel Messi?

    Story highlights

    • FIFA unveils the 23-man shortlist for the 2013 Ballon d'Or
    • Barcelona's Lionel Messi has won the award in each of the last four years
    • Real Madrid Cristiano Ronaldo joins Messi on the 2013 shortlist
    • Six players from European champions Bayern Munich are also nominated
    Time for a change?
    For the last four years, Lionel Messi has been unrivaled as the world's finest footballer.
    On Tuesday the sport's global governing body FIFA and France Football unveiled the nominees for the 2013 Ballon d'Or, the award handed to the year's best player, and once again Barcelona star Messi heads up the list.
    The Argentine is joined on the 23-man shortlist by Cristiano Ronaldo, the Real Madrid goalscorer widely accepted as the one player who can challenge Messi's supremacy.
    But after Bayern Munich's stellar 2012-13 season, Messi and Ronaldo face a raft of challengers from the reigning European and German champions.