According to the FIFA World Team of the year the best left back in the world 2009 is:
Patrice Evra, playing for Manchester United and France
source: http://www.fifa.com/classicfootball/awards/gala/besteleven.html
But now, Ashley Cole is (2010). I think he was voted best left back in the world this year.
Ashley Cole!
Jose Enrique (Newcastle Utd) Fact
Ashley Cole
john terry is the best and puyol ,pique are also good None of the above are left backs. The current left back in the UEFA team of the season is Marcelo of Real Madrid.
Roberto Carlos
Yes because the WORLD BEST such as:Lionel MessiDiego Maradona
It is either Patrice Evra or Ashley Cole.
Left Central Back - In other words, he can be used both as Left back and Central back.
Roberto Carlos was. I think Ashley Cole is definitely!
In my opinion the best left midfielder in the world is Manchester United's Ryan Giggs, he has scored in very season that he has played for Manchester united and has a record 11 league championships in the English top division (premier league).
Ryan Giggs or Arjen Robben. Ryan Giggs is good at passing, Robben is speedy and quick.
Mack reed who plays left back and plays for peebles football club