player_scores1 = [{:first_name=>"Bruce", :score => 43, :time => 50},
                      {:first_name=>"Clark", :score => 45, :minutes => 20}]

    player_scores2 = [{:last_name=>"Wayne", :points => 13, :time => 40},
                      {:last_name=>"Kent", :points => 3, :minutes => 20}]

    p (0...[player_scores1.length, player_scores2.length].min).map {|i| {
        :full_name => player_scores1[i][:first_name] + " " + player_scores2[i][:last_name], 
        :score => player_scores1[i][:score] + player_scores2[i][:points]
    }}

[{:full_name=>"Bruce Wayne", :score=>56}, {:full_name=>"Clark Kent", :score=>48}]