Nicknamed the "Serial Killer" because of his deadly cool in front of goal, El Hadji Diouf knows he must hit top form at the World Cup if his team are to have a chance of progressing.
Senegal's dependency upon him is shown up by the fact that he netted eight of his side's 14 goals during qualifying, with hat-tricks against Algeria and Namibia.
He has played for Sochaux and Rennes in France but the 2001 African Player of the Year is now with Lens.
At just 21 years of age, he has plenty of time to fulfil his potential.
He has already shown a willingness to work for the team. He is unselfish in front of goal and runs hard off the ball.