India, July 15 -- Thomas Tuchel has acknowledged the scale of the challenge England face against Lionel Messi ahead of their blockbuster World Cup semi-final with Argentina. The England manager knows containing Messi will be key if his side is to reach the final. The Argentina captain has been in sensational form throughout the tournament, leading the Golden Boot race with eight goals while once again inspiring the defending champions. Time and again, the eight-time Ballon d'Or winner has delivered when his team needed him most, underlining his enduring influence on the biggest stage. Argentina will once again look to their skipper to produce another decisive performance against an England side determined to end their title defence. Inter...